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　　[Special correspondent of Global Times in Britain and Germany Qiang Wei Mu Jishan Aoki Wei Hui] No! No! No! … … The British Parliament, mired in Brexit, showed the world their ability to say "no". On the evening of April 1, the House of Commons of the British Parliament once again conducted an "indicative vote" on the alternatives to Brexit. As a result, all four options were rejected again. The Brexit agreement led by British Prime Minister Theresa May has been rejected three times, and various alternatives proposed by Parliament have failed to pass many times. Originally, March 29th was supposed to be the day when Britain left the EU. At the request of the British government, the date was extended to April 12th. Seeing that the "deadline" was approaching, there was still no hope of breaking the deadlock. Banier, the EU’s chief negotiator in charge of Brexit, warned on the 2nd that it is increasingly possible for Britain to leave without agreement. Fu Sida, the chief negotiator of the "Brexit" of the European Parliament, even bluntly said that Britain’s "hard Brexit" was almost inevitable. For more than two years, Britain has devoted almost all its political energy to the issue of Brexit, but what it got was endless quarrels and repeated vetoes. The split and paralysis of British politics has become the object of ridicule by many foreign media. The Irish Independent newspaper said that "the British parliamentary system cannot find any solution, which makes their democracy a laughing stock".

　　On the evening of the 1 ST local time, the lower house of the British Parliament voted again on four "soft Brexit" alternatives. As a result, four proposals, including negotiating with the EU to maintain a customs union, establishing a "Common Market 2.0", holding a second referendum and canceling Brexit if no agreement can be reached, have not received more than half of the votes. Among them, the proposal to maintain a customs union with the EU was rejected by three votes, which is the closest scheme among all the "indicative votes".

　　Immediately after the voting results were announced, the exchange rate of the pound against the US dollar fell by nearly 1%. The British "Daily Express" said that there are still 10 days to go to the EU’s Brexit deadline for the UK, but parliamentarians have said "no" to all Brexit programs. CNN said on the 2nd that if Brexit is a tennis match, it will be a hard five-set match. In the past, five sets of games were tied, and now the score is 60, and neither side can gain obvious advantages. Everyone is exhausted, and there is no end in sight.

　　"The possibility of Britain leaving the EU without agreement is increasing." According to Agence France-Presse, Banier, the EU’s chief negotiator in charge of Brexit, warned of the deadlock in Brexit on the 2nd. Banier said that leaving the EU without an agreement has never been what the EU wanted. "But the 27 EU countries are ready now, and it is becoming more and more possible every day.". Banier also said that if Britain fails to pass an agreement in the next few days, there are only two options left: no agreement to leave the EU, or a request for a long delay in leaving the EU. The latter option requires Britain to agree to hold the European Parliament election in May, which the Theresa May administration, which wants to leave the European Union before then, has tried its best to avoid.

　　Agence France-Presse said on the 2nd that British Brexit Secretary Buckley hinted that the government may seek a fourth vote on the Brexit agreement this week to avoid the delay in the Brexit process and hold the European Parliament election in May. Buckley warned that otherwise, "the default legal position is that Britain will leave the EU within 11 days", even if no agreement is reached. The BBC said that a number of cross-party lawmakers proposed an urgent motion on the 2 nd, asking the Prime Minister to delay Brexit if no agreement can be reached.

　　"A hard Brexit is almost inevitable." Former Belgian Prime Minister Fu Sida, the chief negotiator of the "Brexit" of the European Parliament, issued a more straightforward warning on the 2nd. European Commission President Juncker said in an interview with Italian television: "We are very patient with our British friends, but our patience is running out." French President Macron warned on the 2nd that the EU should not be "held hostage" by the Brexit crisis. Macron also said that if Britain can’t find a solution, it will actually choose to leave the EU without agreement. "We can’t stop this failure.".

　　[car home Technology] I don’t know if everyone in front of the screen knows anything about the 100,000-class pure electric compact car. As far as the author is concerned, the competition of this class of cars is actually quite fierce. On the one hand, it is a price war, on the other hand, it is repeatedly involved in design, safety and configuration. In this class of cars, (|) successfully circled the powder with its retro and beautiful shape. Of course, we don’t talk about design today, but look at the scientific and technological strength behind this boutique car through actual disassembly.

● Five-ring body frame

　　The length, width and height of Wuling Binguo are 3950*1708*1580mm respectively, and the wheelbase is 2560mm. Thanks to its front-drive pure electric platform technology, the cabin space utilization can be maximized.

　　For small cars, consumers are not only concerned about the performance of their cabin space, but also extremely concerned about their safety. Binguo adopts a five-ring car body frame structure, which can increase the rigidity of the car body and improve NVH performance, and at the same time, it can quickly transfer collision energy when a collision occurs, reduce the intrusion of the passenger compartment and protect the safety of the passengers.

　　The A-pillar, B-pillar and sill beam constitute the thermoformed steel door ring, which can bear higher pressure and improve the torsional stiffness and safety of the car body. At the same time, the steel door ring of hot car can also improve the sealing performance and torsional stiffness of the car body, improve NVH performance and enhance ride comfort.

　　The energy-absorbing box can reduce the maintenance cost of low-speed (20-30km/h) impact, because the energy-absorbing function of the energy-absorbing box can avoid the damage of the longitudinal beam, and the damaged energy-absorbing box can be replaced separately.

　　According to official data, compared with the design of only the front finger beam and the front longitudinal beam, the triple frontal collision-resistant energy-absorbing structure design of Binguo can achieve a 15% improvement in energy absorption efficiency.

　　There is also a steel anti-collision beam at the rear of Binguo, but there is no energy-absorbing box between it and the body. Even so, the existence of the anti-collision beam can disperse the impact energy of the rear collision, thus reducing the damage degree of the rear collision accident to the vehicle.

● Robust chassis

　　Binguo adopts the suspension combination of front McPherson and rear torsion beam, which is common at the same level. Simple structure, durable leather and low manufacturing cost are a major feature of this suspension form.

　　Compared with the open beam, the closed torsion beam with variable cross-section improves the stiffness of the torsion beam by 41% and the bearing capacity accordingly, thus reducing the vibration and improving the ride comfort.

　　According to the manufacturer’s introduction, Bingo’s chassis adjustment style is tough, that is, to ensure ride comfort on the basis of achieving good support of the car body. Therefore, bingo will be more stable when driving at high speed, giving people more sense of security, and emergency lane-changing vehicles can also provide good support. Binguo 410km Linxi Exclusive Edition uses a brand-new motor with better performance, and its top speed can reach 130km/h, which is higher than that of other models with 100km/h and 120km/h, so it is quite necessary to match a robust chassis.

　　Compared with the 175 and 165 tire widths commonly used in the same class, the wider tread of Bingo standard tires is beneficial to improve tire grip, make the vehicle run more stably, and ensure sufficient braking performance.

　　In addition to making great efforts to filter the vibration of the chassis to improve NVH performance, Bingo also made a fuss about the details such as the sealing and sound insulation measures of the passenger compartment. Both the front and rear side doors of Binguo have two complete sealing strips to ensure the tightness of the passenger compartment and avoid the introduction of environmental noise and wind noise into the car. At the same time, the sound-absorbing cotton of the front and rear outer wheel covers of Bingo is made of non-woven fabric +PP+PET+ non-woven fabric, which can effectively absorb the tire noise and the noise generated when the suspension system works.

● Water-cooled flat wire motor and refined battery

　　Binguo 410km Lingxi exclusive edition adopts water-cooled flat-wire permanent magnet synchronous motor, which is a three-in-one design and integrates motor, electronic control and differential.

　　Compared with the round wire motor, the slot fullness of the flat wire motor is increased by 20%, the contact area between the flat wires is larger, the heat conduction is better, and the heat dissipation capacity is stronger. The power density of the flat wire motor is increased by 0.8kW/kg, and the high efficiency range is expanded by 11%, thus making the maximum efficiency of the motor more than 96%.

　　We can see that there is a cooling water jacket on the stator shell of the motor, and the cooling liquid will circulate in the water jacket, taking away the heat generated when the motor works, and improving the continuous high power output performance and durability of the motor.

　　Wuling’s refined battery should be familiar to all of you. I introduced this battery in detail in the technical article of Wuling Starlight (click to view).

　　The battery core of Shenlian battery can not catch fire or explode in the acupuncture test; In the shallow needling test (the steel needle penetrates 1/3 of the battery thickness), the battery can still discharge normally; When the battery cell is extruded and deformed by external force up to 40%, it can not catch fire or explode. The safety performance at the cell level is quite eye-catching, which is also the key factor for the high safety of Bingo battery system.

　　At the level of battery pack, Shenlian battery adopts a structure called MUST, that is, Multifunctional Unitized Structure Technology, a multifunctional integrated battery pack structure technology. The biggest feature of this structure is that the cells are put into the reinforced frame and then installed into the battery pack. This reinforced frame can improve the structural strength of the battery pack by 60%.

　　Battery packs have suffered a lot in the laboratory, and it is common to go to the mountains and go to sea. The whole package of Shenlian battery has been tested by temperature change test, water immersion test, high temperature acupuncture test, vibration test, bottom dynamic impact test and charge-discharge test.

More exciting videos are all on the car home video platform.
"Needle Punching Test of Shenlian Battery Core"

　　Like mainstream electric vehicles on the market, Bingo’s BMS battery management system also supports Che Yun Intelligent Collaboration. In addition to real-time monitoring of battery status at the vehicle end, all-weather and life-cycle second-level safety inspection will also be carried out in the cloud. When the system detects battery collision, stabbing or overheating, it will actively remind the driver to prevent problems before they happen.

　　According to the manufacturer, this can reduce the maintenance cost by 90%. At the same time, Wuling has also strengthened the training of battery maintenance in the 4S after-sales service system. I believe that in time, its after-sales service outlets will be fully equipped with power battery maintenance capabilities. Compared with the power battery specialized service that can be seen in the market now, it is obvious that the official after-sales service can reassure consumers.

　　In this regard, I also asked the engineer at the dismantling site whether there will be batteries in the form of direct cooling or water cooling with refrigerant installed on Bingo. The engineer’s reply is vague and only means "on the road". Perhaps in the future, Bingo with more powerful electric drive system will use direct cooling or liquid cooling battery system with active temperature control function, which is worth looking forward to.

● Full text summary:

　　Wuling Binguo, as a pure electric small car, has done its homework in terms of cabin space utilization and safety, completely dispelling consumers’ concerns about small space and insecurity of small cars. At the same time, the affordable price of 59,800-88,800 yuan, combined with its fashionable and beautiful shape, is a good choice for buying food scooters in the near future. (Photo/Text/Photo/car home Chang Qinglin)

CCTV News:The 133rd Canton Fair will be held in Guangzhou in three periods from April 15th to May 5th, and the second period will be held from today (April 23rd) to April 27th. The Canton Fair has always been the window and epitome of China’s opening to the outside world, and it is also an important platform to promote China enterprises to go global and enhance the competitiveness of products and brands. At this year’s Canton Fair, enterprises have brought the latest products to attract partners.

The reporter learned from the China Foreign Trade Center that since the first phase of the Canton Fair was launched, the number of visitors has exceeded 1.26 million.

On the basis of maintaining 16 categories of commodities, the current Canton Fair has 54 exhibition areas and 159 special areas. Exhibitors brought the latest ideas and products, and comprehensively displayed the new trends and new achievements of various industries.

Exhibitor Du Yuanyuan:In the past, it was mainly based on OEM. Today, it is our own invention and innovation display. All the new products have come to the Canton Fair for release.

It is understood that the number of new products released online in this Canton Fair is about 800,000, which is more than a quarter of the total number of online exhibits, and the number of online and offline new product debut activities has reached 300.

Xiao Rong, Deputy Director of Canton Fair Business Office:Enterprises in the new exhibition area are concerned by a large number of overseas buyers, and more than 20% of overseas buyers visit the new exhibition area, and the negotiations and transactions are enthusiastic, which shows that China’s foreign trade enterprises are full of vitality.

    Xinhua News Agency, Lanzhou, May 28 (Reporter Li Jie) Yang Changyou’s hanging heart has also settled down when he saw that 1,326 yuan of subsistence allowance funds have arrived.

    "Just in time." Yang Changyou, 58, said that I never expected the application process to be so fast. In April this year, he applied and uploaded materials through his mobile phone, and the village cadres took the initiative to help sort out the materials. In May, the funds were approved.

    Yang Changyou is a villager in Sandungou Village, Liangshui Town, Wudu District, Longnan City, Gansu Province. Originally, his son was working outside, and he and his wife were farming at home. "I just wanted to save some money and wait for my baby to find a wife." However, at the end of 2024, my wife suddenly had intestinal perforation. "We spent more than 60,000 yuan before and after, and it also delayed the baby’s work." Yang Changyou said.

    After the relatives in the village learned the situation, they asked him to try to apply for subsistence allowances. However, when he thought that the villagers had applied for ID cards, household registration books and a lot of photocopied materials in the past, he somewhat retreated. "Recently, the land at home has to be cleaned up, so there is no time to get it."

    What he doesn’t know is that in September 2024, Longnan City officially launched the "Longnan Social Assistance Smart Management System" and the "Longnan Assistance Link" WeChat applet, which can be applied by computer or mobile phone, and there is no need to run away. Under the telephone prompt of Sandungou village cadres, the son who accompanied his wife to see a doctor completed the application with his mobile phone in the hospital.

    "The development of this system and small programs is really convenient for grassroots cadres and the masses." Liu Lu, a full-time cadre of civil affairs in Liangshui Town, said frankly.

    Looking back on the people’s experience of seeing a doctor, Liu Lu said that in the past, when applying for assistance, villagers had to carry a pile of paper materials, which was basically difficult to bring all of them every time, and they had to be supplemented repeatedly. "You have to run two or three times and run out of a pair of iron feet." Not only the masses are distressed, but as a grassroots cadre, she is also under pressure: Liangshui Town has three communities and 18 administrative villages with a permanent population of more than 30,000, but she is the only one in charge of civil affairs at the township level. "The workload is heavy and it is difficult to ensure accuracy and timeliness."

    Longnan City, which is located in Qinba Mountain area, is restricted by geographical conditions. Most villages are located in mountainous areas, far from the town government, and it is inconvenient for people in need to apply for assistance. At the same time, the number of needy people with social assistance system in Longnan accounts for one-tenth of the permanent population, and the average annual subsidy for needy people accounts for more than 50% of the city’s annual general public budget revenue. Efficient and convenient civil assistance is the key to the reform that cannot be ignored.

    Social assistance is related to people’s livelihood and people’s hearts. The key to civil assistance lies in timely understanding the urgent needs and worries of people in need. In order to implement the spirit of the eight central regulations, Longnan focused on the people’s worries, worries and worries, conducted in-depth research and demonstration, and finally launched the system and small programs after a year of development, construction and trial operation.

    Wang Yinfu, chief of the Department of Pension Services and Aging Work of Longnan Civil Affairs Bureau, said that the development of the system and small programs has enabled people in need to apply for assistance such as subsistence allowances, extreme poverty and temporary assistance with computers or mobile phones without leaving their homes, so as to facilitate the people and serve the people, and realize the transformation of social assistance services from "iron feet" to "handheld office", effectively solving the problem that people’s application for assistance is restricted by personal health status, time, place and human interference.

    During the interview, the grassroots staff also reflected that the "handheld office" also effectively reduced the burden on the grassroots, and the grassroots staff could provide more accurate on-site guidance, and they did not need to fill in paper files in the whole process, avoiding the repeated collection and provision of materials.

    According to the statistics of the Civil Affairs Bureau of Longnan, up to now, the needy people in Longnan have applied for more than 10,000 households and more than 40,000 people online, and 4,084 households with more than 14,000 people have been approved, which has truly facilitated the people and benefited the people, and is accurate and efficient. "We will continue to strengthen the informationization of social assistance and do more practical things for the people." Wang Yinfu said.

　　Corn is one of the crops with the largest sown area and the highest yield in China. Corn has a wide range of uses, not only as feed, but also for various industrial purposes, and provides high-quality protein and starch for human beings. The natural outcrossing rate of maize is as high as 95%, so hybrid seed production and special maize production need to be strictly separated. Conventional time and space isolation measures are time-consuming, laborious and difficult. How to realize corn non-isolated production in a scientific way is an urgent production problem. In general, both self-pollination and hybridization of maize can bear fruit, but there is a phenomenon that a few maize do not accept other maize pollen in nature, which is called unilateral cross-incompatibility (UCI) of maize. Some studies have reported three UCI loci, Ga1, Ga2 and Tcb1, which are composed of pollen and filament determinants respectively. According to the structure and function of UCI loci, maize in nature can be divided into three types: S type (Ga1-S, Ga2-S and Tcb1-S), which contains both pollen and filament determinant genes; M-type (Ga1-M, Ga2-M and Tcb1-M) only contains pollen determinant genes; Common types (ga1, ga2 and tcb1) contain neither pollen nor filament determinant gene. UCI controls the sexual transmission direction of haploid gametes and can be used for reproductive isolation between different types of maize.　
　　Chen Huabang, research group of Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, devoted himself to the study of maize one-way cross incompatibility, and reported the pollen and filament factor genes at Ga1 and Ga2 loci and their applications successively (Zhang et al., 2012；; Zhang et al., 2018，Chen et al., 2022； Cai et al., 2022）。 Recently, the team has once again made important progress in the study of maize incompatibility. In this study, the pollen determinant Tcb-m at Tcb1 locus was cloned. This is the "last" cloned determinant gene of maize incompatibility system. So far, all the key determinants of the three incompatibility sites have been cloned and verified, which laid the foundation for the study of commonness and specificity among maize incompatibility systems. On November 16th, related research results were published online in Plant Biotechnology Journal with the title of A Pollen Expressed PME Gene at TC B1 Locus Confers Maize Independent Cross-in Compatibility.　
　　It was found that the pollen factor Tcb1-M at TCB1 locus of maize encoded Pectin Methylesterases (PME), which was specifically expressed in the pollen of Tcb1-S materials. Studies have shown that the expression of Tcb1-m gene in common corn by transgenic method can make it pollinate and bear fruit for Tcb1-S type materials. Tcb1 locus and Ga1 locus are closely linked, and their pollen and filament factors are highly similar, and the two loci are in tandem repetitive relationship. However, Tcb1 locus only exists in the primitive ancestor of maize, and Ga1 locus exists in both maize and maize, which indicates that the two loci have differentiated and produced specificity after maize domestication. There are also a certain number of materials containing Ga1 or Ga2 loci in common corn in nature, which will reduce the application value of UCI loci in corn. In this study, the materials containing three sites were combined in different forms, and a polymer material containing two or three incompatible sites was created, which not only effectively hindered the pollen of ordinary corn, but also effectively prevented the risk of penetration of materials containing a single incompatible site, and further improved the application of corn incompatibility in non-isolated seed production. This study laid a material foundation for the mechanism analysis of incompatible systems.　
　　The research work is supported by the National Natural Science Foundation of China.　
　　Cloning and application of pollen factor gene at Tcb1 locus in maize