西安桑拿论坛 – 上海后花园论坛-上海419论坛-夜上海论坛

The income ratio of urban and rural residents in Guangdong has remained within 2.5∶1 for two consecutive years, breaking the ＂dual structure＂ barrier and promoting the comprehensive integration of urb

　　"The richest place is in Guangdong, and the poorest place is also in Guangdong", which was once a portrayal of the imbalance between urban and rural development in Guangdong. How to turn the shortcomings of rural development into potential boards is an important issue for Guangdong to achieve high-quality development.

　　Since the 12th Party Congress of Guangdong Province, Guangdong has made great efforts to solve the problem of urban-rural dual structure, promoted the new urbanization strategy and rural revitalization strategy in coordination, achieved full coverage of modern agricultural industrial parks in major agricultural counties, initially established a modern rural industrial system, basically completed the improvement of the basic environment of natural villages in the province, and promoted the gradual narrowing of the income ratio of urban and rural residents, keeping it within 2.5∶1 for two consecutive years.

　　Especially in May, 2020, since the provincial party committee and the provincial government issued and implemented "Several Measures to Establish and Improve the System, Mechanism and Policy System of Urban-Rural Integration Development in Guangdong Province", a new type of relationship between workers and peasants, which is mutual promotion, urban-rural complementarity, comprehensive integration and common prosperity, has been accelerated in Guangdong, and new breakthroughs have been made in urban-rural integration development.

　　Breakthrough of system and mechanism??

　　Explore more vivid experiences of coordinated development between urban and rural areas.

　　During the "May Day" this year, Xiaohuashan Scenic Area, located in Qingxin District of Qingyuan City, welcomed a group of tourists who came here to stay in homestays, enjoy beautiful scenery and taste delicious food, which was very popular. Just a few years ago, Xiajing Village, Liujiadong, where the scenic spot was located, was a different story. There were many mountains and few fields, so it was difficult to intensively develop industries, and villagers went out to work.

　　Under the leadership of the Party branch of the village, Xiajing Village revitalized and integrated 2,600 square meters of homestead, and cooperated with social capital to operate the Xiaohuashan leisure and holiday project. The collective economic income of the village increased from 19,000 yuan to more than 5 million yuan, and the shareholders received nearly 3,000 yuan in dividends. "The villagers have more right to speak, and this reform has made us more motivated." Zou Donghai, a villager from Xiajing Village who received the share certificate, said.

　　It is the key to promote the integration of urban and rural areas to establish and improve the system and mechanism conducive to the integration of urban and rural areas.

　　Since the Guangqing junction area was included in the National Urban-Rural Integration Development Experimental Zone in December 2019, Guangdong has successively issued the Implementation Plan of Guangdong Guangqing junction area in the National Urban-Rural Integration Development Experimental Zone and the General Plan for the Construction of Guangqing Special Economic Cooperation Zone, etc., to promote the implementation of measures such as "improving the settlement policy due to the city", "improving the supporting policies for citizens" and "establishing the incentive mechanism for talents to join the countryside", and constantly explore the "Guangqing experience" in the coordinated development of urban and rural areas.

　　In recent years, Qingyuan has taken the reform of joint-stock cooperative system of rural collective economic organizations and the reform of "three plots of land" (rural contracted land, homestead and collective management construction land) as a breakthrough to promote the accuracy of rural land reform and smooth the circulation channels of urban and rural factors. At present, 10 experimental tasks and 148 key projects in Qingyuan (district) of Guangqing junction area have been solidly promoted.

　　"Guangqing junction area is the only cross-administrative experimental area of urban-rural integration in China. Guangqing should not only explore the experience of leading the northern ecological development area into the development of Guangdong-Hong Kong-Macao Greater Bay Area in the Pearl River Delta, but also demonstrate the dual structure of urban and rural areas and promote the radiation of central cities to drive the vast rural areas into urban development." The relevant person in charge of the Provincial Development and Reform Commission said.

　　System construction needs not only a breakthrough in "point" but also an overall plan in "area". In May 2020, Guangdong issued and implemented "Several Measures for Guangdong Province to Establish and Improve the System, Mechanism and Policy System of Urban-Rural Integration Development", which made a comprehensive arrangement for Guangdong to promote urban-rural integration development.

　　-establish a development mechanism for beautiful small towns. Guide the rural population to live in towns and improve the level of public services such as education, medical care and old-age care in towns and villages.

　　-improve the mechanism for metropolitan areas to take the lead in realizing urban-rural integration and development. In the past five years, Guangzhou, Shenzhen and other central cities have played an increasingly prominent role in driving the surrounding rural areas. Cross-city public transport and medical association construction have promoted the two-way flow of factor resources between urban and rural areas.

　　-establish a development mechanism for beautiful small towns. A number of characteristic small towns and towns with distinctive industrial characteristics, cultural integration of production cities, and suitability for industry, residence and tourism are accelerating to emerge in Guangdong.

　　Taking Guangqing junction area as the pilot, in November 2020, Guangdong also listed 7 cities and counties such as Jiangmen downtown production-city integration demonstration zone and 39 central towns such as Xinlong Town in Huangpu District of Guangzhou as provincial-level pilot areas for urban-rural integration development in Guangdong Province, and defined the pilot scope and tasks.

　　Two-way flow of elements??

　　Build a platform to attract resources and connect industries with urban and rural areas

　　The continuous improvement of the system and mechanism of urban-rural integration development promotes the two-way flow of talents, capital and other factors between urban and rural areas.

　　"The farmers’ cash cow is back!" Li Lianghao, captain of the task force of Pingtai Town in Yunan County, Yunfu City, was very happy. Due to the problems of pests and diseases, the former rich fruits of local farmers-citrus and passion fruit-have low benefits, and many farmers give up planting.

　　Thanks to the technical support of agricultural scientists and technicians of the Provincial Academy of Agricultural Sciences, the fruit industry planting benefits in Pingtai Town have been greatly improved, and farmers have rekindled their enthusiasm for planting.

　　It’s not just a platform town. By the end of 2021, the Provincial Science and Technology Department had promoted the stationing of rural science and technology commissioners in the town to help 901 key towns and villages to fully cover, and sent 901 teams and 2,767 rural science and technology commissioners to go deep into the countryside to help promote agriculture through science and technology.

　　In the past five years, through the implementation of measures such as university student village officials, "three supports and one support" and "youth meritorious service", more young people from Guangdong have come to the countryside from cities and become a new force to help the urban-rural integration and development. According to the data of the Provincial People’s Social Welfare Department, in the job collection of "three supports and one support" in 2021, supporting agriculture and helping rural revitalization accounted for 71.42%.

　　Returning home for employment and entrepreneurship has gradually become a trend. According to the survey conducted by the Provincial Department of Agriculture and Rural Affairs in 2020, among the high-quality farmers in the province, the proportion of returning migrant workers is over 1/3, which has become an important form of high-quality human resources flowing from towns to villages.

　　On the other hand, more funds will be injected into the countryside to further enhance the development momentum of urban-rural integration.

　　Before the start of spring ploughing this year, Zhao Sihai, the head of Sihai Grape Manor in Zhaoqing City, began to plan to turn the vineyard into a complex integrating grape picking, modern agricultural leisure sightseeing and catering. Because there is no collateral, funds have become a "roadblock". However, Zhou Zhihao, the "Deputy Secretary of Finance", soon applied for a bank credit line of 300,000 yuan for him, which solved Zhao Sihai’s urgent need.

　　Funds from different channels converge into the sea, which helps the integration of urban and rural development: the total income of agricultural insurance premiums has increased to 4.777 billion yuan (excluding Shenzhen) by the end of 2021, attracting 18 million farmers to participate in insurance; Since 2018, the scale of agricultural-related funds coordinated by the provincial finance has exceeded 30 billion yuan every year, and more than 80% of them have been invested in the grassroots of cities and counties …

　　The two-way flow of resource elements also bridges the coordinated development of urban and rural industries.

　　In Jiedong, Jieyang, we will build a "1+4+1" industrial collaborative development platform to promote bamboo shoots to become the most promising local characteristic agriculture.

　　In Luhe, Shanwei, Hekou Town makes full use of local high-quality resources to build a tourist base for studying in the north of Hekou. Urban and rural resources complement each other, which drives local consumption to exceed 1 million yuan and effectively promotes farmers’ income.

　　In recent years, Guangdong has continuously established and improved the cultivation mechanism of new industries and new formats, and accelerated the establishment of a modern agricultural management system. Guided by the "back garden" and "vegetable basket" and "rice bag" of green mountains and green hills, we will promote the active docking of rural areas and integrate them into the construction of pilot demonstration zones in Guangdong-Hong Kong-Macao Greater Bay Area and Shenzhen.

　　The data shows that at present, the province has created 18 state-level and 235 provincial-level modern agricultural industrial parks, formed 6 state-level advantageous industrial clusters, 56 state-level agricultural industrial towns and 139 state-level "one village, one product" demonstration villages and towns, and initially established a modern agricultural industrial system of "cross-county clusters, one county, one park, one town, one industry and one village, one product".

　　Enhance people’s livelihood and well-being??

　　The income gap between urban and rural residents is narrowing year by year.

　　To promote the integration of urban and rural development, the starting point and the end result lies in promoting people’s livelihood and well-being.

　　In recent years, the development trend of urban-rural integration in Guangdong is improving, and the most intuitive manifestation is the continuous growth of rural residents’ income. The data shows that the annual per capita disposable income of rural areas in the province increased from 15,780 yuan in 2017 to 22,306 yuan in 2021, with a cumulative increase of 41.4%.

　　At the same time, the income gap between urban and rural residents has been narrowing year by year. In 2021, the income ratio of urban and rural residents in the province has dropped to 2.46∶1, and it has remained within 2.5∶1 for two consecutive years, and it has been shrinking. "This means that Guangdong’s urban-rural integration and development has achieved certain results." Wan Zhong, vice president of Guangdong Rural Research Institute, said.

　　The integration of urban and rural development has effectively promoted the great changes in the rural landscape of Guangdong.

　　By the end of 2021, the province had completed more than 153,000 natural villages with "basic improvement of rural human settlements", and the coverage rate increased from 62% in 2017 to over 99.8% in 2021. The toilet penetration rate of rural health households, the collection, transportation and disposal system of rural domestic garbage and the treatment rate of rural domestic sewage all rank among the top in the country; The pavement hardening rate of townships and administrative villages, the bus service rate of administrative villages and the maintenance rate of rural roads all reached 100%; The number of rural 5G and 4G base stations ranks first in the country, and the 4G network of administrative villages has achieved full coverage.

　　In recent years, Guangdong has continuously filled the shortcomings of rural public services, making the countryside more livable. In Huacheng Town, Wuhua County, Meizhou, not only the Huacheng Branch of the County Library was established, but also five smart self-service library were set up to promote the full coverage of the whole town. In Yangcun Town, Boluo County, Huizhou, Yangcun Central Health Center was upgraded to the second people’s hospital of Boluo County, and operated according to the standard of second-class first-class general hospital. The annual outpatient volume can reach 600,000, and 90% of the patients do not leave the county. In Suixi, Zhanjiang, 15 towns and villages have access to roads above Grade III, and the smoothness rate of towns and villages is 100%. A road property right protection team with "road managers in counties, supervisors in towns and road guards in villages" has been basically established.

　　"The integrated development of urban and rural areas is an efficient way to break the dual structure of urban and rural areas and promote the effective connection between the achievements of poverty alleviation and rural revitalization." Liu Wei, director and researcher of the Institute of International Studies of the Provincial Academy of Social Sciences, said that Guangdong is accelerating the transformation and upgrading of the agricultural industry by promoting the free flow of urban and rural resource elements.

　　■ Grassroots practice

　　Haojiang District, Shantou City:

　　Walk out of the road of integrated development of "beautiful urban area+beautiful countryside"

　　Art wall painting, wide lanes, ancient charm of tidal wind, pastoral songs … Walking into Donglong Community, Binhai Street, Haojiang District, Shantou City, it seems that you are in a "creative world", and fashion creativity and Chaoshan elements collide and blend, which makes people shine. Every weekend, it has become a preferred place and punching point for many citizens to play and relax.

　　Put the time back to five years ago, when the Donglong community was weak in collective economy and backward in infrastructure, the people made a living by farming and going out to work. Today, the community has been transformed into a livable home in the hearts of local residents by promoting the construction of beautiful countryside. "It is indeed very proud that the community can become like this." Resident Mr. Cai said.

　　In Hepu Street, Haojiang District, there is a "flower world" with an area of 1,000 mu-Danying Ecological Park, where flowers are in full bloom and tourists are weaving. In recent years, Danying Ecological Park has accelerated the integrated development of "agricultural cultural tourism" and innovatively launched farming cultural experience projects. The activities such as transplanting festival, fishing festival, strawberry festival, farmland subscription and rice field harvesting are very popular among tourists.

　　Not only Donglong community and Hepu street, but also all villages in Haojiang District. The effect of "three clean-ups, three dismantlements and three rectifications" has been outstanding, and the management of rural housing and the improvement of rural features have been continuously promoted, creating a beautiful overseas Chinese village in East Lake, a pilot project for improving the features of two rural houses in Hongqi and Hongguang, and a demonstration film for the revitalization of villages in Donglong, Shangdian, Jade and Gangbei … Haojiang’s rural revitalization and construction heat wave after wave.

　　Make the city better and the countryside more beautiful. In recent years, Haojiang District has made great efforts to solve the dual structure of urban and rural development, and made overall plans for industry and agriculture, cities and villages as a whole, promoting the mutual integration and common development of urban and rural areas in planning layout, factor allocation, industrial development, public services, ecological protection, etc., and comprehensively speeding up the construction of a port-city integration demonstration zone and creating a rural revitalization demonstration model of "beautiful urban area+beautiful countryside" integration development.

The data boosted confidence, and China’s economy continued to pick up and consolidated.

CCTV News:Recently, a number of economic data have been released. The data show that in the first quarter, China’s industrial production rebounded, the profits of industrial enterprises continued to grow, foreign exchange market transactions remained active, the market scale of new energy vehicles continued to expand, and the number of people entering and leaving the country at many ports increased … … Data boost market confidence, consolidate the foundation of economic recovery, and promote China’s sustained economic recovery.

Profits of industrial enterprises above designated size continued to grow in the first quarter.

According to the data released by the National Bureau of Statistics on April 27th, with the increasing implementation of macro-portfolio policy, the market demand gradually improved, and industrial production rebounded. In the first quarter, the profits of industrial enterprises above designated size continued to grow, and the revenues of industrial enterprises continued to recover.

In the first quarter, the total profits of industrial enterprises above designated size nationwide reached 1,505.53 billion yuan, up 4.3% year-on-year, and the operating income reached 30.96 trillion yuan, up 2.3% year-on-year. The profits of industrial enterprises maintained growth, and the revenues of industrial enterprises continued to recover.　

Nearly 70% of the industry profits have increased. In terms of categories, the profit of manufacturing industry changed from a decline in the previous year to an increase of 7.9%. Among them, the profit of high-tech manufacturing industry achieved rapid growth. In the first quarter, the profit of high-tech manufacturing industry decreased from the previous year to a year-on-year increase of 29.1%, which was 24.8 percentage points higher than that of industrial enterprises above designated size.

Equipment manufacturing industry plays the role of "ballast stone" for profit growth. In the first quarter, the profit of the equipment manufacturing industry increased by 18.0% year-on-year, and the growth rate was 13.9 percentage points faster than that of the previous year.

The profit of consumer goods manufacturing industry maintained rapid growth. With the in-depth implementation of the policy of expanding domestic demand and promoting consumption, consumer demand has been continuously released. In the first quarter, the profit of consumer goods manufacturing industry decreased from the previous year to a year-on-year increase of 10.9%, which strongly supported the profit recovery of industrial enterprises.

China’s foreign exchange market transactions remain active, and the market operates smoothly and orderly.

According to the latest data from the State Administration of Foreign Exchange, in March, China’s foreign exchange market totaled 3.47 trillion US dollars. 1— In March, China’s foreign exchange market totaled 9.32 trillion US dollars. China’s foreign exchange market transactions remain active and the market operates smoothly and orderly.

In March, the import and export scale of China’s international balance of payments trade in goods and services was 4,043 billion yuan, a year-on-year increase of 3%. Among them, the trade surplus of goods was 250.4 billion yuan and the trade deficit of services was 153.3 billion yuan.

In March, the import and export of goods and services in the balance of payments increased by 3% year-on-year

According to the data released by the State Administration of Foreign Exchange, in March, the import and export scale of China’s international balance of payments trade in goods and services was 4,043 billion yuan, a year-on-year increase of 3%. Among them, the export of goods was 1,855.6 billion yuan and the import was 1,605.3 billion yuan; The export of service trade was 214.4 billion yuan and the import was 367.7 billion yuan. In dollar terms, in March, China’s international balance of payments trade in goods and services was $291.6 billion in exports and $278 billion in imports, with a surplus of $13.7 billion.

The market scale of new energy vehicles in China continues to expand.

2024 auto china is being held. The head of China Association of Automobile Manufacturers said that in the first quarter of 2024, the production and sales of new energy vehicles in China increased by 28.2% and 31.8% respectively, and the automobile production capacity in China was not excessive.

According to the data of China Association of Automobile Manufacturers, in the first quarter of 2024, the production and sales of new energy vehicles in China reached 2.115 million and 2.09 million respectively, up by 28.2% and 31.8% year-on-year, with a market share of 31.1%, and the market scale continued to expand.

Fu Bingfeng, executive vice president of China Automobile Industry Association, said that from the general law of the global automobile industry, it is reasonable for the automobile capacity utilization rate to be 70% to 90%, and there is no excess capacity in China automobile industry.

Fu Bingfeng said that with the popularization of electric vehicles, the capacity utilization rate of fuel vehicles will definitely decline accordingly. Many enterprises have realized this change and started to transform the original fuel vehicle production line, which is becoming a true portrayal of the transformation of old and new kinetic energy in China automobile industry. Whether it is production line construction, capacity release or market development, it is a necessary process to adapt to the transformation of electrification.

The rapid development of new energy automobile industry in China promotes the transformation and upgrading of China automobile industry, and at the same time, it has a positive impact on the global automobile industry. Recently, Chery Automobile announced that it will set up a joint venture in Barcelona, Spain, and cooperate with the local authorities to develop new electric vehicle products. BYD’s latest financial report revealed that it will set up a factory in Mexico. At the same time, the technological innovation and cost advantage of China’s new energy automobile industry have also promoted the competition and progress of the global new energy automobile market.

China has formed a complete industrial ecology and is promoting the reconstruction of the global automobile industry chain.

The number of people entering and leaving many ports continues to climb, and the peak of cross-border travel during the May 1 holiday comes ahead of schedule.

The "May Day" holiday is approaching, and the land ports in Guangxi and Yunnan have ushered in the peak of inbound and outbound passenger flow in advance.

As the holiday approaches, the number of Vietnamese citizens returning home to visit relatives and cross-border tourists between China and China is increasing. It is estimated that during the May 1 holiday, the number of inbound and outbound passengers at Dongxing Port in Guangxi will reach more than 140,000.

According to the data provided by Guangxi Border Inspection Station, during the May 1 holiday in 2024, there will be more than 196,000 inbound and outbound passengers at Nanning, Youyiguan and Dongxing ports.

May 1 — On the 5th, Nanning Port plans to have about 44 direct flights to 12 cities, including Hong Kong, Macau, Manila, Philippines and Phnom Penh, Cambodia. It is predicted that the number of inbound and outbound passengers will exceed 11,000.

Friendship Pass in Pingxiang, Guangxi is one of the most convenient land routes from China to Vietnam. Its unique border customs and scenic spots in Hongguan attract many Chinese and foreign cross-border tourists. During the "May Day" holiday, it is estimated that the number of inbound and outbound passengers at Youyiguan Port will exceed 45,000, and the daily average is expected to be close to 10,000 during the peak period.

As the largest land port on the border between China and Myanmar, Ruili Port plays an important role as a bridge and link in the trade between China and Myanmar. The data shows that compared with the fourth quarter of 2023, in the first quarter of 2024, the inbound and outbound passenger flow at Ruili Port increased by 9.1% month-on-month, and the inbound and outbound means of transport increased by 1.6% month-on-month, and the average daily inbound and outbound passenger flow exceeded 12,000.

Hekou Port is the largest land port in Yunnan section of Sino-Vietnamese area. It is estimated that the number of people entering and leaving the country will exceed 70,000 during the May Day holiday in 2024.

Besides bats, pigtail rats also have echolocation ability! Researcher： It is expected to help the blind.

With a pink nose, small eyes, wide and flexible ears and a broom-like tail, the pig-tailed mouse, known as the "blind mouse", has an echolocation ability.

Recently, researchers from Kunming Institute of Zoology, Chinese Academy of Sciences came to this conclusion.

The research groups of Shi Peng, Jiang Xuelong and Liu Zhen, the State Key Laboratory of Genetic Resources and Evolution of the Institute, jointly tackled the problem, and confirmed that the species of the genus Rodent has the ability of echolocation by integrating several independent evidences of ethology, anatomy, genomics and gene function experiments.

"In addition to the well-known bats, toothed whales, etc., pigtail rats also have this ability, which is amazing in itself!" On July 5th, one of the researchers, Dr. Liu Qi from Shi Peng’s research group, was interviewed by The Paper (www.thepaper.cn) and introduced that the research on echolocation ability of pigtail rats lasted for about 4 years. This study is expected to make the pig-tailed rat become a new experimental animal to study the neural circuits of sound, hearing and echolocation. He also hopes that the research results can be applied to artificial intelligence in the future, such as improving auto-driving and blind-assisted navigation.

"Are there other mammals that have this ability but have not been discovered?" Liu Qi believes that there is still a lot of room for the research and application of echolocation, and the research on pig-tailed mice is only the beginning.

The experiment lasted for nearly four years, and the researchers stayed up late with the pig-tailed rats.

The nose is pink, the eyes are small, the ears are wide and very flexible, just like bats, they will swing back and forth and collect sounds in different directions. Its tail is very long, shaped like a broom, and there is a pinch of white hair at the end of it.

This is Liu Qi’s research object-pigtail rat, which is also called "blind rat" because of its small eyes. It belongs to the genus pigtail rat of Rodent Echinopodidae.

Liu Qi studied the echolocation ability of pig-tailed rats. Echo location refers to a directional behavior of animals in navigation, foraging and other activities by comparing the information difference between sending sound waves and receiving echoes.

As early as 2017, Liu Qi had already started this research.

At that time, after he did some basic work, the experiment had preliminary research results. He organized the experimental content into an English manuscript and sent it to secience magazine in the form of a short article. Journals have given great affirmation to this research achievement and shown great interest, which has given them great confidence.

"In the later process, we supplemented many experiments according to the requirements of the magazine and constantly enriched and improved the paper." Liu Qi said that on the one hand, it is necessary to obtain accurate experimental evidence from many aspects, on the other hand, the workload of each experiment is very large, including the subsequent papers being revised many times, so the whole project involves a long time, and it is a joint effort of multiple research teams.

Liu Qi introduced that the correspondence authors Shi Peng and Liu Zhen’s research group have been engaged in the research on the convergent evolution and molecular genetic mechanism of echo localization for a long time, and have published many heavyweight research results. Another cooperative team, researcher Jiang Xuelong, who is also the correspondent of the paper, is engaged in the research on the behavioral ecology, phylogeny and classification of pig-tailed rats. This research is the result of joint research by three research groups.

Although there are three top teams in the joint experiment, there are many difficulties in the experiment.

Liu Qi introduced that the first difficulty comes from the research object-the pig-tailed rat. Before the study, they didn’t know much about the living habits of this kind of wild animal, such as what it eats, where it lives, whether it lives in groups, what its nest looks like and its activity time.

Secondly, the wild population of pigtail rat is not large, so it is a big problem to catch it and catch a certain number of live pigtail rats when doing experiments with it.

At the same time, the researchers have no experience in raising pigs. After catching a certain number of pigs, they don’t know how to raise them. They are worried that the artificially created conditions can’t make pigs behave naturally.

However, with the advancement of the experiment, solutions have been found to these difficulties.

What makes Liu Qi feel very interesting is that in the experiment, they found that animals such as pigtail rats are nocturnal. They sleep during the day and are more active at night. Therefore, in the process of behavioral experiments, researchers arrange experiments at night, and sometimes they have to work all night to complete an experiment.

The echolocation function of small-eyed "blind mouse"

Liu Qi said that in the experiment, they recorded the short-term, frequency-modulated and high-frequency sound waves (peak frequency ~98 kHz) regularly emitted by the pig-tailed rats during movement. In dark environment, pigtail rats will emit higher ultrasonic velocity in complex space environment and when avoiding obstacles. All these results show that the ultrasonic waves emitted by pigtail rats play a directional role in sports behavior, that is, echolocation.

Subsequently, the researchers used classic experimental devices and strict experimental design to verify whether the pigtail mouse has the ability of echolocation. Through the behavioral task experiment, it is found that the pigtail rats will spend more time and send out higher ultrasonic speed to explore the target. They can accurately detect the escape platform and successfully obtain food rewards in complete darkness. When its ears are blocked, the pig-tailed rat can’t receive the echo and can’t detect the target and complete the task; After removing the earplugs, the pig-tailed rat recovered its ability to explore and locate the target. Under the condition of eliminating vision, touch and controlling sense of smell, behavioral experiments confirmed that the pigtail mouse achieved its goal by emitting ultrasonic waves and receiving echoes by hearing.

In addition, the researchers used technical means to present the anatomical structure of the pig-tailed rat, and found that the spatial position of its hyoid bone and tympanic bone contacted and fused, which was consistent with the structure of the echolocation bat that sounded through the throat. This shows that the pig-tailed rat and the echolocation bat with laryngeal vocalization have the same anatomical structure basis in vocalization and auditory structure.

Liu Qi and other researchers also sequenced and assembled the high-quality whole genome of the Chinese pigtail mouse. Through evolutionary genomics analysis, it was found that the echolocation of the pigtail mouse originated independently. In the whole genome, the pig-tailed rat and the known echolocation species (bats and toothed whales) are significantly enriched in auditory genes.

By integrating several independent evidences of ethology, anatomy, genomics and gene function experiments, it is confirmed that the species of the genus Rodentia has the ability of echolocation.

It is expected to be used in artificial intelligence, blind-assisted navigation and other fields.

The echolocation ability of pigtailed rats seems to be inferior to that of ordinary people. However, Liu Qi said that this research may be applied to artificial intelligence in the future, such as improving auto-driving and blind-assisted navigation.

Liu Qi said that from the perspective of science itself, echolocation, as a special behavior of animals, is very rare in the animal kingdom. At present, the echolocation species known by human beings may be limited to a few kinds, such as bats and toothed whales, which are familiar to everyone, and some unfamiliar ones, such as some birds, shrews and hedgehogs.

"In addition to the animals listed above, we have confirmed that there is another kind of mouse, which also has echolocation skills. It is amazing in itself to find food or locate targets by hearing and ultrasound!" Liu Qi said that in addition to five groups of independent origin, such as bats, toothed whales and giant whales, the research team found a sixth group with this ability.

In addition, because the pig-tailed rat is a rodent, its genetic relationship and size are close to those of model animal mice, and its breeding is easy to operate, it is expected to become a new experimental animal to study the neural circuits of sound, hearing and echolocation.

Liu Qi said that human beings have developed many bionic products based on the long-term research on echolocation species such as bats. For example, bats will send out ultrasonic waves to detect targets, track moving prey, or avoid obstacles in time. The invented guide rod is convenient for the blind to move.

He admits that there is still a lot of room for the research and application of echolocation, and the research on bats, pigtails and other animals and their echolocation will have more influence on human life in the future.

After discovering that pigtail rats have echolocation ability, Liu Qi and his research team have been thinking about whether there are other nearly 6,000 kinds of mammals in nature that have this ability but have not been discovered. They hope that through the efforts of the team, they can find more such magical animals.

"This requires the unremitting efforts of many researchers, and it may even be a very long exploration process." Liu Qi said that the discovery of pig-tailed rat and its echolocation is only the beginning. They hope to stick to this research and expect that it can be used in artificial intelligence in the future, such as improving auto-driving and blind-assisted navigation.

(This article is from The Paper, please download the "The Paper" APP for more original information)

Fully guarantee the high-quality development of the ＂enterprise dare to do＂ escort economy.

CCTV News:Enterprise is the core element of economic development. In order to extend the service tentacles to the front line of enterprises and further optimize the business environment, in recent years, Suzhou Public Security Bureau of Jiangsu Province has innovatively introduced a number of measures to facilitate entry and exit, and through the implementation of "one-window service, nearby service and self-help service", it has fully guaranteed "enterprises dare to do it" and empowered the high-quality economic development.

Not long ago, an enterprise in Zhangjiagang needed to apply for visas for Shanghai employees to expand its overseas business. After understanding the situation, the police of the enterprise hanging point project timely coordinated the relevant departments to guide the employees of the enterprise to fill in the application materials according to the "National General Office" policy for entry and exit documents, and successfully handled the entry and exit documents at the public security entry and exit window of Zhangjiagang Administrative Service Center.

Staff of an enterprise in Zhangjiagang City:I was supposed to come here today to consult about the passport business. Because of the company’s business needs, I didn’t expect to get the passport directly during the consultation process. I was very happy.

Li Jian, captain of the Exit-Entry Management Brigade of Zhangjiagang Public Security Bureau:Our Exit-Entry Administration Brigade has further deepened the "streamline administration, delegate power, strengthen regulation and improve services" reform, and introduced a number of measures to optimize the entry and exit convenience and benefit enterprises, effectively solving the problem of the surge in demand for outbound business, tourism and study.

In Taicang Port Modern Logistics Industrial Park, the public security organs, together with the customs and border inspection departments, established Taicang Port Immigration Management Service Center, and introduced customs clearance facilitation measures such as foreign crew management service, crew shift change and special emergency passage for freight transportation, which shortened the transit time by more than 30%, effectively helping the production and business activities of import and export enterprises.

The reporter learned that in order to make enterprises feel at home in a better development environment, Suzhou Public Security Bureau focused on the concerns of enterprises, optimized public security government services, deepened the implementation of service measures such as "one window for all services" and "one network for all services", set up police service workstations in areas where enterprises are concentrated, and established mechanisms such as "one enterprise for one police" and "one project for one special class" for key projects to realize point-to-point and zero-distance supply of management services. Enterprises need to respond 24 hours a day.

Is Apple’s official APP really safe？ The lottery ＂voted＂ 120,000 yuan became a bubble.

　　Cctv news：APP— — Refers to the software specially built for the mobile network platform. Apple’s mobile phone users must download the APP in Apple’s official app store. Apple explained that the software on the official app store has undergone strict review to provide users with a safer and more reliable experience. Is Apple’s official platform really safe? Mr. Mou, an Apple mobile phone user in Shandong, recently encountered troubles. He suffered heavy losses after downloading an APP marked as "official platform" in the app store.

　　In April this year, Mr. Mou from Zibo, Shandong Province, had the idea of buying lottery tickets because of a joke from a friend. He searched for the word "lottery" in his Apple mobile APP store and found a large number of related APPs. Because he had no experience in buying lottery tickets, Mr. Mou downloaded an app marked "official lottery platform" after comparison.

　　The words "official platform" and the LOGO of Fucai made Mr. Mou feel very relieved. After reading the operation introduction provided on the APP, Mr. Mou began to bet. In just ten days, he invested 120,000 yuan.

　　Gambling APP set a trap to recharge, you must bet.

　　The money charged into the APP must be purchased by lottery, and it can only be extracted after winning the prize. Such a rule makes Mr. Mou step by step into the trap. At first, I just wanted to win it back because I lost 8,000 yuan. It was not until I invested more than 100,000 yuan that Mr. Mou became suspicious.

　　In the screenshot of the conversation between Mr. Mou and APP customer service staff, it was recorded that the customer service staff claimed to be the official lottery platform to admit that they had their own lottery, which made Mr. Mou stupid. When he carefully checked the recharge record on the APP, he found that every recharge went to different accounts, some were convenience stores and some were hardware stores, which had nothing to do with the so-called "official platform of Chongqing Welfare Lottery". When Mr. Mou checked with Chongqing Welfare Lottery Distribution Center, he realized that he had been trapped.

　　It is difficult for users who have suffered serious losses to defend their rights.

　　Chongqing Welfare Lottery Distribution Center made it clear that the state prohibits the online sale of lottery tickets. Why did you download an APP named "Chongqing Welfare Lottery Official Platform" in Apple’s app store? Mr. Mou, who suffered losses, began to defend his rights from Apple at the end of April.

　　Since April 24th, Mr. Mou has repeatedly called Apple’s customer service hotline to reflect his experience. Although Apple provided the corresponding acceptance number for Mr. Mou’s complaint, it never gave a reply.

　　On April 27, Mr. Mou came to Apple’s office in Pudong, Shanghai, and asked Apple to provide the information of the actual registrant of the APP pretending to be the official platform of Chongqing Welfare Lottery and provide corresponding financial compensation, but the staff refused. Later, Mr. Mou sent an email to Apple’s headquarters in the United States, reflecting the scam he encountered and asking the other party to provide information about the APP involved, but Apple’s reply did not respond to Mr. Mou’s request.

　　Mr. Mou has been communicating with Apple for more than 50 days in Shanghai, and Apple has never provided him with relevant information about the APP involved. Mr. Mou, who plans to defend his rights through litigation, has no way to provide complete materials to the court. On July 16th, the reporter and Mr. Mou came to the Apple Company at No.391 Yuanshen Road, Pudong District, Shanghai. The staff refused to let the reporter and Mr. Mou in on the grounds of safety, and there was only one way to reflect the problem, that is, to fill in the form, leave a phone number and wait for the reply from Apple.

　　Online lottery tickets completely prohibit illegal apps from still existing.

　　Apple refused to provide Mr. Mou with the registration information of APP suspected of gambling and impersonating the official platform on the grounds of user privacy and safety, but Mr. Mou found that many users using Apple mobile phones reported similar lottery scams on some online complaint websites, many of which were cheated by hundreds of thousands, and some were tens of thousands. And how did the APPle App Store, which claimed to be strictly audited, get these illegal apps under the official banner mixed in?

　　On July 19th, when a reporter typed in "lottery ticket" in the APPle App Store, hundreds of apps appeared. Among the top 30 apps, three were marked with the striking words "official version" on their icons, and four were marked as "official authoritative platforms" in the developer’s name, all of which were marked with five-star full marks.

　　An APP named "Welfare Lottery" uses a similar shape and color scheme to China Welfare Lottery. The developer’s name reads "2018 Official Authoritative Lottery Platform". After entering the download page, the reporter found that the developer’s name of the platform was marked as "Hubei Zhenxin Lottery Culture Development Co., Ltd.". When the reporter downloaded the APP and opened it, he found that the platform was titled "22 Lottery". In the interface of the APP, there are Chongqing Shichai, Beijing PKS, Hong Kong Mark Six Lottery, etc. Users want to bet on the platform first. Recharge. In the introduction of this APP, the reporter did not find any information authorized by the official platform of welfare lottery.

　　After logging in to official website, China Welfare Lottery Distribution Management Center, the reporter found that as early as the beginning of April this year, in view of the problem of using the Internet to sell welfare lottery tickets in Jiangsu, Ningxia and other five provinces and regions, China Welfare Lottery Distribution Management Center issued an announcement, clarifying that "welfare lottery institutions at all levels and welfare lottery agents must standardize their sales behavior and must not cooperate with any unit or individual to use the Internet to sell welfare lottery tickets in violation of regulations."

　　Since China has banned the sale of lottery tickets on the Internet as early as 2015, why can the APP that sells lottery tickets in Apple’s app store become popular and even pretend to be an official platform to attract users? The reporter conducted a survey on a number of Internet companies providing APP platforms in Shanghai, Jiangsu and other places, and found that no one refused to develop lottery-related APPs. As long as they spend money, they can be put on Apple’s app store.

　　In addition to promising to get through the channel of putting the lottery APP on the APPle App Store, the technician also revealed to reporters the loopholes in Apple’s app review.

　　Illegal APP borrows vest to escape supervision.

　　By using the technical means of changing the code keywords in the APP, it can pass the audit of APPle. Such a flaw makes a large number of illegal apps exist in the Apple App Store. Through the investigation, the reporter found that Apple also has serious loopholes in the content supervision after the APP was put on the shelves. An illegal APP can generate multiple apps by grafting flowers and trees, which is also called "casing" in the black industry chain of the Internet.

　　Network security researchers showed reporters that there are a lot of gray or even black transactions in Internet forums. Some people ask how to shell the APP in Apple’s IOS system, and some are selling the shell code of the APP. And Mr. Mou from Shandong downloaded the "Lottery Recommendation — The official platform has also appeared the phenomenon of casing in use.

　　With the name of an APP, the name can be changed through background operations. The practice of changing the vest in this way is to escape supervision and illegally collect money.

　　Although APPle announced the review process of the APP, emphasizing that "APPs involving games, gambling and lottery tickets can only include this function after fully verifying the relevant legal requirements of all countries/regions of the upcoming app", the reporter found through investigation that there were serious review loopholes in the Apple App Store from qualification to content. According to the Regulations on the Management of Mobile Internet Application Information Services issued by the National Network Information Office in 2016, "Mobile Internet application providers should strictly implement the responsibility of information security management, establish and improve the user information security protection mechanism, and protect users’ right to know and choose during installation or use according to law, and respect and protect intellectual property rights." Zhu Wei, one of the drafters of this regulation and deputy director of the Communication Law Research Center of China University of Political Science and Law, said that users’ interests were damaged due to the confusion of platform management, and they should take the initiative to take responsibility to prevent more serious consequences.

Jaguar XEL in Zhengzhou is being discounted! The latest offer 187,800, not to be missed

At Autohome Zhengzhou Promotion Channel, we bring you the latest promotions. Currently, this luxury sedan is on an unprecedented promotion in Zhengzhou area, with a maximum discount of an astonishing 130,000 yuan. The starting price has been adjusted to an attractive 187,800 yuan. For consumers who are interested in buying Jaguar XEL, this is a car purchase opportunity not to be missed. To take advantage of this wave of price reductions, please click "Chatti Car Price" in the quotation form to get more affordable car purchase conditions.

郑州地区捷豹XEL正在优惠！最新报价18.78万，不容错过

With its elegant and sporty exterior design, the Jaguar XEL shows the charm of British luxury. The front face features the Jaguar family’s iconic large-mouth air intake grille, and with sharp LED headlights, it is both fierce and refined. The body’s smooth lines and body proportions are coordinated to create a low and dynamic coupe style. The overall style combines sports performance with luxury, which is Jaguar’s interpretation of modern driving aesthetics.

郑州地区捷豹XEL正在优惠！最新报价18.78万，不容错过

With its elegant body proportions, the Jaguar XEL showcases unique side lines, measuring 4778mm x 1850mm x 1429mm in length, width and height, and a wheelbase of 2935mm, ensuring a spacious and comfortable interior. The front track is 1598mm and the rear track is 1582mm, providing good stability for the vehicle. The tire specification adopts 225/45 R18, which is paired with a delicate wheel design, not only provides excellent grip, but also further enhances the vehicle’s sense of movement and aesthetic value.

郑州地区捷豹XEL正在优惠！最新报价18.78万，不容错过

The interior design of the Jaguar XEL shows the perfect blend of elegance and modernity. The exquisite leather steering wheel provides a comfortable grip and supports manual up, down and back adjustment, ensuring easy control for the driver. The 10.2-inch high definition central control screen is equipped with an intelligent automatic speech recognition control system, which is convenient for operating practical functions such as multimedia, navigation and telephone. The seats are made of imitation leather, which makes it comfortable to sit. The main and passenger seats are equipped with multi-directional adjustment functions, including front and rear, backrest, high and low and waist support, to ensure the comfort of long-distance driving. The front seats also have a heating function to provide additional care for passengers. The USB/Type-C interface is set up to meet the charging and data transmission needs of passengers, and the wireless charging function of mobile phones brings more convenience to modern life.

郑州地区捷豹XEL正在优惠！最新报价18.78万，不容错过

The Jaguar XEL is powered by a 2.0T four-cylinder engine with a maximum power output of 184 kilowatts and a power output of 250 horsepower. This engine is matched with an eight-speed manual transmission, which not only provides a strong power output, but also ensures a smooth driving experience.

Summarizing the owner’s point of view, he is full of praise for the appearance of the Jaguar XEL. He believes that its front face design not only inherits the family classic, but also incorporates modern sports elements. The design of headlights and cover lines is full of power and sporty atmosphere. The elegant lines on the side of the body and the matching of large-size wheels enhance the visual impact of the whole vehicle. Overall, this Jaguar XEL not only has a very high value, but also reflects the owner’s deep understanding and appreciation of design details. It is undoubtedly a very attractive gift for drivers.

Huizhou Audi Q5L price reduction news! The reserve price 259,000, act quickly

Welcome to [Autohome Huizhou Promotion Channel] to bring you the latest car market trends. Now, this luxury SUV is in full swing in Huizhou with attractive promotions. Buyers can enjoy high discounts of up to 161,300, giving the Audi Q5L from the original price of 259,000 a new price charm. This is a rare opportunity, if you want to seize the discount, act quickly! Please click "Check the car price" in the quotation form to get more specific information on car purchase discounts and strive to achieve higher savings in the car purchase process.

惠州奥迪Q5L降价消息！底价25.9万，赶快行动

The Audi Q5L attracts the eye with its exquisite exterior design and elegant temperament. The front face part adopts the hexagonal air intake grille that is the hallmark of the Audi family. The smooth lines of the grille echo each other with the LED headlight group, showing the perfect fusion of power and technology. The body lines are smooth, the overall style is both sporty and luxurious, and the body proportions are coordinated to outline a strong sense of movement. The lines of the side skirt and the rear part are handled just right, further highlighting the luxurious atmosphere of the Q5L. The overall exterior design not only reflects Audi’s pursuit of detail, but also fully demonstrates its unique charm in the medium-sized luxury SUV market.

惠州奥迪Q5L降价消息！底价25.9万，赶快行动

The Audi Q5L has a unique body profile with its elegant and smooth side lines. The body measures 4770mm long, 1893mm wide and 1667mm high, and the wheelbase reaches 2907mm, giving a sense of spaciousness. The front track is 1616mm and the rear track is 1610mm, which guarantees good driving stability. The tire specification is 235/55 R19, which is paired with a delicate rim design, which not only provides good grip, but also adds a sporty and luxurious atmosphere. Overall, the side design of the Audi Q5L balances power and elegance, showing the consistent high quality and design sense of Audi.

惠州奥迪Q5L降价消息！底价25.9万，赶快行动

The interior design of the Audi Q5L upholds Audi’s usual sense of luxury and technology. The delicate leather-wrapped steering wheel provides a good grip, and its manual up and down + front and rear adjustment functions ensure driver comfort. The center console is equipped with a large 10.1-inch screen, which integrates multimedia systems, navigation and phone functions, and automatic speech recognition technology makes operation more convenient. The seats are made of imitation leather, and the main and passenger seats support front and rear, backrest, high and low adjustment, and have leg rests and waist support to ensure comfort during long-distance driving. The front seats are also equipped with heating function, and the driver’s seat also has power seat memory, which fully reflects its user-friendly design. USB and Type-C interfaces are evenly distributed in the front and rear rows, making it convenient for passengers to connect their devices.

惠州奥迪Q5L降价消息！底价25.9万，赶快行动

The Audi Q5L is powered by a 2.0T turbocharged engine with a maximum power of 140 kilowatts and an outstanding maximum torque of 320 Nm, capable of delivering 190 horsepower. Matching a 7-speed wet dual-clutch transmission ensures a smooth driving experience and high performance.

Summarizing the comments of Autohome owners, the Audi Q5L won her favor with its atmospheric design and comfortable visual experience. In terms of space, whether it is the rear or the trunk, it can meet the needs of family travel. In terms of driving experience, the solid chassis brings stability to high-speed driving, and the smooth control makes daily driving easy. The intelligent taxi function allows her to experience fuel-efficient and stable driving pleasure on the highway. The panoramic sunroof is equipped to add endless comfort to the driving time. As she said, this is not just a car, but a mobile star observation station. In short, the Audi Q5L has undoubtedly become an ideal choice for a satisfied owner with its comprehensive performance and considerate design.

Chaoyang： 27 shopping malls settled in the consumption map

　　Original title: Chaoyang 27 shopping malls settled in the consumption map

　　On the afternoon of February 28, the launching ceremony of the 2023 Tide Chaoyang · Consumption Season and the theme salon of trendy new consumption development trends were held. 27 shopping malls simultaneously settled in the consumption map, which will provide consumers with more accurate travel suggestions.

　　Chaoyang is a major consumer area in the capital, and CBD and Sanlitun are the top three business districts in the city. The 2023 Chaoyang consumer season will run through the whole year, so that "there are activities every week, and there are bright spots every month", and continue to expand the brand effect and influence of "Chaoyang".

　　"2023 is a key year for consumption to boost economic development. We will give full play to the guiding role of policies in the consumption season, create a prosperous and orderly consumption environment, and support enterprises to carry out innovative consumption activities." According to the relevant person in charge of Chaoyang District, Metro Line 14, Liangmahe and CBD form the consumption map of the whole region. Chaoyang District will promote the development of important commercial nodes in the direction of trend innovation, cultivate consumption hotspots, and drive stable consumption growth.

　　The "2023 Chaoyang Consumption Map" created by Chaoyang District Business Bureau and Autonavi Map is launched simultaneously. At present, 27 fashion shopping malls have settled in. Open the "Autonavi Map" mobile client side and search for "Chaoyang" to view the precise location of the mall, rich pictures and personalized recommendation reasons, so that consumers can make better travel decisions. Chaoyang District will also launch coffee, food maps, as well as cultural tourism consumption and sports consumption maps, so that citizens can go out of their homes and experience a better life. (Zhu Songmei)

The same life and different prices, why do Meituan taxi users have the distinction between high and low？ netizens shouted injustice

null

After reading this article, you will understand why the world is so dark.

Recently, Meituan and Didi had a wonderful fight in Shanghai… However, some netizens on the Internet began to complain that Meituan taxi has no advantage over Didi in terms of price, and when different consumers call a taxi through Meituan, there are serious differences in the treatment of different prices for the same journey, which makes netizens cry unfair!

null

In response to this statement, Convex Jun decided to conduct an experiment in the office…

It is not difficult to see from the figure below that different consumers choose the same route at the same time, and the price difference of Didi is 1.4 yuan. The price difference of Meituan taxi is even more outrageous, with a price difference of nearly 8.49 yuan. In addition, Meituan’s highest price of taxi is 34.97 yuan, which is 3.27 yuan more than Didi’s highest price of 31.7 yuan…

null

Why does this happen?

Therefore, we interviewed Mr. Gong Li, a veteran in the online car-hailing industry. According to Mr. Gong,Whether it is Meituan Taxi or Didi, there is a unique big data pricing system. This system uses "reserved price and consumer surplus" as the big data pricing principle. This set of principles completes the final pricing according to the four dimensions of cost, supply and demand, consumption power and consumption habits.

To put it simply, a bottle of water sells for 2 yuan. For rich people, they don’t care about spending 5 yuan to buy a bottle of water. Similarly, for a person who has just come out of the desert and is half thirsty, he is even willing to spend 100 yuan to buy this bottle of water. For a person who has just finished drinking water at home, even if the price of this bottle of water is reduced to 1 yuan, he may not have the intention to buy it. Consumption ability and consumption willingness jointly determine different groups of people, and the consumption price will be deviated.

null

This means that if a consumer who regularly uses Meituan for a ride or Didi, the online car-hailing big data will define him as a high-quality customer willing to pay, thus giving a higher price for a ride.

This is like an auction. In the car water Ma Long, every consumer is actually a buyer, and every time they place an order, they "raise a sign", but big data has already understood the psychological price that each auctioneer is willing to bear, while buyers are in the dark about it.

null

One of the most realistic scenarios is: Xiao Ming left the company very late after working overtime, took out his mobile phone and called for an online car-hailing. As a result, the big data background of the online car-hailing found that there was only one available for dispatch within 5 kilometers. At the same time, Xiao Ming’s car mileage is actually not long, and it is estimated that the driver is not willing to accept such a small order… So the big data background made a decision, on the basis of the standard price of 15 yuan, rose 30 yuan, and quoted Xiao Ming at 45 yuan. As a result, Xiao Ming found that the price was ridiculously high, hesitated for a while, cancelled the order, and walked or rode a shared bicycle home. At this time, the system again determined that this quotation had exceeded the psychological price that Xiao Ming was willing to bear.

After a few days, Xiao Ming worked overtime again, and after get off work, he took out his mobile phone to summon a car from the Internet. At this time, although there was still only one available online car within a 5-kilometer radius, the floating price quoted by the system would not be so high. The quotation was only 15 yuan, so Xiao Ming happily accepted the offer of 30 yuan.

After a few days, Xiao Ming called a car at the same place at the same time period, and the system would quietly float the quotation and make a deal at 32 yuan… After that, every time Xiao Ming called a car at the same place at the same time period, the system would float the quotation little by little, 34 yuan, 36 yuan, 38 yuan, 39 yuan… Finally, one day, when the quotation exceeded 40 yuan, Xiao Ming cancelled the order again. At this time, the system understood that 39 yuan was Xiao Ming’s psychological price. From then on, Xiao Ming’s overtime fee for calling a car home was fixed at 39 yuan.

null

This is the most fundamental principle of the online car-hailing platform using big data to "kill". Someone asked, according to this principle, if you have nothing to do every day, you can order a car on the online car-hailing APP, and then cancel the order when the system quotes, and in the long run, the system will reduce its own quotation. It sounds very reasonable, but the problem is that the programmer’s IQ is not low.

Getting back to the original topic – as for why Meituan’s differentiated quotation for taxis is so much worse than Didi’s, it is actually because Meituan’s big data base is not as good as Didi’s. The larger the big data base and the longer the duration, the more accurate the differentiated quotation for consumer behavior. But in any case, it is actually an ethical issue for companies to formulate differentiated quotations for different consumers through big data analytics based on the principle of "reserved price and consumer surplus".

Officer Lei announced： Xiaomi SU7 will be unveiled on December 28th.

On December 25th, Lei Jun, founder and CEO of Xiaomi Technology, issued a message on the official social platform, saying: "This time, only technology will be issued, and no products will be issued. See you at 2 pm on December 28 (this Thursday). " The picture is the chassis of the vehicle. It is worth mentioning that the official Weibo of Xiaomi Automobile has also been officially launched, and the poster has been released simultaneously with the text "See you at 2 pm on December 28." . According to the available information, Xiaomi SU7, the first medium and large car owned by Xiaomi Automobile, will be unveiled on the same day (December 28th).

The new car has been declared before, and several versions will be launched, which are divided into three versions: standard version, Pro and Max. Available in four endurance versions of 628km, 668km, 800km and 750km.

Presumably, you are already familiar with several declaration drawings of Xiaomi SU7, but as a rule, let’s simply review it. Xiaomi SU7 was designed by Li Tianyuan, a designer of BMW iX, and applied the popular elements at the design level. The whole car is concise and sporty. Specifically, the car adopts a rounded polygon headlight group, and the interior adopts a light cavity structure similar to a herringbone element, which is matched with a large trapezoidal air inlet below, so that the recognition degree is high.

From the side of the car body, the car uses embedded hidden door handles to optimize the drag coefficient of the car. At the same time, the car adopts double five-spoke rim shape to enhance the sporty atmosphere. In terms of tail, Xiaomi SU7 adopts a penetrating taillight group, which is fashionable and personalized with the unique diffuser decoration below. In terms of body size, the length, width and height are 4997/1963 /1440mm and the wheelbase is 3000mm respectively.

The new car is expected to provide three versions: basic version, Pro and Max, which are different in configuration, such as laser radar, which is also the usual practice in the industry. In terms of power, Xiaomi SU7 will provide a front and rear dual-motor version and a single-motor version. The former has a front and rear motor power of 220 kW/275 kW; The motor power of the latter is 220kW.

At the same time, according to the announcement information, Xiaomi SU7 will be equipped with two battery pack options, 73.6kWh and 101kWh, of which 73.6kWh is a lithium iron phosphate battery provided by Foday, with a 400V voltage platform, battery life of 628km and 668km respectively, and the total mass of the battery pack is 579kg；; 101kWh is a ternary lithium battery provided by Contemporary Amperex Technology Co., Limited. It adopts 800V high-voltage platform, and its battery life is 800km and 750km respectively, with a total mass of 645.8kg.