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Three major US stock indexes overnightMixed up and down,S&P 500 indexIt fell 0.21% to 5051.41 points.Nasdaq composite indexIt fell 0.12% to 15,865.25 points.Dow Jones industrial averageIt rose by 0.17% to 37,798.97 points.

Among the US stocks overnight,A total of 103 Chinese stocks rose and 162 Chinese stocks fell..

Popular Chinese stocksAmong them, Alibaba fell by 1.46%, Pinduoduo by 0.67%, Netease by 1.90%, JD.COM by 1.42%, Baidu by 0.09%, New Oriental by 0.05%, Billy by 2.40% and Iqiyi by 0.25%.

New forces of building carsAll fell, with LI down 0.66%, Weilai down 2.06% and Xpeng Motors down 0.69%.

[Related News]

AI Liu Qiangdong: Live broadcast is not easy.

At 6: 18 pm on April 16th, Liu Qiangdong AI Digital Man (AI Liu Qiangdong) started the live broadcast in JD.COM. AI Liu Qiangdong said that it was not easy to live broadcast by exchanging experience with the purchasing and marketing team today, and JD.COM purchasing and marketing brought low-priced good things to consumers at affordable prices. "JD.COM does not charge pit fees and commissions, which not only benefits consumers, but also attracts excellent businesses to settle in." AI Liu Qiangdong said. In the live broadcast, AI Liu Qiangdong repeatedly recognized the excellence of "purchasing and selling brothers", who can solve problems in the workplace and win in the competition. (Sina Technology)

Ctrip, Qunar.com, Tongcheng and other platforms released the May 1 forecast: the difficulty of grabbing tickets for popular routes is not lower than that of Spring Festival travel rush.

According to Ctrip, Qunar. com and Tongcheng, the May Day Travel Foresight Report was released. April 16th is also the day before the May Day holiday (April 30th) when train tickets are on sale. On the platform where to go, passengers have booked tickets in advance. Judging from the booking situation, it is not less difficult to buy tickets for popular routes such as Beijing-Shanghai, Chengdu-Xi ‘an, Shanghai-Wuhan, Shenzhen-Changsha and Beijing-Qingdao than Spring Festival travel rush. At the same time, outbound travel has also entered the peak booking period. In addition to popular destinations such as Singapore, Malaysia, Japan and South Korea, tourists also tend to explore small foreign cities. On the platform of where to go, as of April 15th, hotels in 957 foreign cities have been booked by China tourists.

() In response to the approval of Weilai’s qualification to build a car, we will continue to cooperate in other fields.

Recently, Weilai users posted the content of picking up cars on social media. The picture of picking up the car shows that the tail mark of Weilai’s new car has changed from "Jianghuai Automobile" to "Weilai". This means that Weilai’s car-making qualification has been approved and the production line has been switched, and Jianghuai Automobile’s production qualification is no longer used, and new cars have been delivered in the name of Weilai. On April 16, a person from Weilai said that there was no relevant response. The relevant person in charge of Jianghuai Automobile responded to the reporter that Jianghuai Automobile and Weilai will continue to cooperate, but at present, the cooperation will not be in OEM, but in other fields, such as cooperation in the field of power exchange. Industry experts pointed out to reporters that the future of Jianghuai Automobile and the new cooperation between Huawei and Volkswagen deserve attention. (SSE)

Patent announcement of Xpeng Motors biped robot

Tianyancha’s intellectual property information shows that recently, the patent of "Mobile Control Method of Foot Robot and Foot Robot" applied by Guangzhou Xpeng Motors Technology Co., Ltd. was announced. It is shown that this method includes: by obtaining the visual map of the surrounding environment, determining the tactile map, rigid body map and fusion map successively, planning the robot foot trajectory. By this method, with the movement of the biped robot, the fusion map can be adjusted in real time with the change of terrain, and the terrain information of the surrounding environment can be accurately represented, so that the robot foot trajectory can be correctly planned according to the fusion map, and the robot can move normally on various terrains, and it is not necessary to collect training data and train in advance, which greatly reduces the development cost. This method is also suitable for different types of biped robots and has strong portability.

LI applied for the trademark of "Ideal Water Drop"

Tianyancha’s intellectual property information shows that recently, Beijing LI Co., Ltd. applied to register an "ideal water drop" trademark, which is classified as a means of transport internationally, and the current trademark status is awaiting substantive examination. According to reports, on March 1st, LI released the flagship MPV—— of home technology-Ideal MEGA, whose appearance was described as a "drop-shaped outline".

Ali Mama launched the product "all-station promotion" to provide merchants with AI intelligent product selection suggestions.

Ali Mama officially announced the launch of the revolutionary product "all-station promotion". According to reports, with the help of the linkage mechanism of payment and exemption, this product can revitalize the overall traffic delivery ROI of Amoy, and promote the overall turnover of goods. Based on LMA big model technology, it can provide AI intelligent product selection suggestions for merchants, helping merchants to quickly locate potential good goods and blow them up to maximize transaction efficiency. The data shows that the search traffic of a hardware category merchant surged three times during the internal test, and many explosive products drove the whole store to sell, which doubled the daily average GMV of the store. (36Kr)

(): It is expected to supply stator and rotor assembly products to LI around June this year.

Founder Motor said on the interactive platform that it is expected that the company will provide stator and rotor assembly products for LI around June this year, and some robot joint products have been sent to customers.

In the first quarter, Tmall’s new businesses increased by 60%

On April 16th, Tmall announced the data of business opening in the first quarter of 2024: the number of new businesses increased by 60% year-on-year. Among them, outdoor sports, smart home, health care, exquisite pets, fashionable clothes and fine skin care have become popular tracks, and the number of new businesses has increased by 100% year-on-year.

Baidu AI Cloud’s new generation intelligent computing operating system was released and named Wanyuan.

At the 2024 Baidu CreateAI Developer Conference held today, Shen Shai, Executive Vice President of Baidu Group and President of Baidu AI Cloud Business Group, announced the release of a new generation of intelligent computing operating system of Baidu AI Cloud Wanyuan. According to reports, the kernel of the operating system not only includes all kinds of characteristic big models including Baidu Wenxin big model, but also is compatible with other third-party big model products, which can fully meet the needs of the industry for using big models. In addition, based on Baidu’s latest ModelBuilder development tool, developers can quickly develop their own models. On top of the model layer, based on development tools such as Baidu AppBuilder and AgentBuilder, it further lowers the threshold for developers to develop AI native applications and can meet the needs of diverse users. (Sina Technology)

Li Yanhong: The open source model will become more and more backward.

According to the interface news, at the Baidu developer conference, Li Yanhong said that after Wenxin 4.0, Baidu can cut out smaller models suitable for various scenes according to needs, taking into account various considerations such as effect, corresponding speed and reasoning cost, and support fine tuning and postpretrain. He believes that the model cut out by dimension reduction is obviously better than the model directly adjusted by open source model under the same size; Under the same effect, the cost is obviously lower, "the open source model will become more and more backward."

The reasoning cost of Li Yanhong’s tool version of Wen Xin Da Model 4.0 dropped to 1% a year ago.

According to national business daily, on April 16th, Li Yanhong, founder, chairman and CEO of Baidu, officially announced the release of the tool version of Wenxin Big Model 4.0 at the Create2024 Baidu AI Developers Conference. Li Yanhong said that compared with a year ago, the algorithm training efficiency of Wenxin Big Model has increased to 5.1 times, the average weekly training efficiency has reached 98.8%, the reasoning performance has improved by 105 times, and the cost of reasoning has dropped to 1%. "In other words, customers used to call 10,000 times a day, and now they can call 1 million times a day at the same cost."

Baidu Li Yanhong: Natural language will become the new general programming language.

"Natural language will become a new general programming language, and as long as you can speak, you can become a developer." This is the new judgment made by Li Yanhong, founder, chairman and CEO of Baidu, at the "Baidu AI Developers Conference" which opened in Shenzhen on April 16th. Li Yanhong believes that developing applications in the future is as simple as shooting short videos, and everyone can be a developer. (Securities Times)

The co-CEO of Samsung Electronics is reported to have visited TSMC and Yunda to promote Samsung HBM.

According to the interface news quoted by Taiwan media, Qing Guixian, co-CEO of Samsung Electronics, recently went to Taiwan Province in a low-key way, and it is reported that he visited TSMC and Yunda, a subsidiary of Quanta Group. According to sources, Qing Guixian’s trip has two major tasks, the most important is to promote Samsung’s latest high-bandwidth memory (HBM), and the second is to discuss possible AI cooperation with Taiwanese factories, but it does not involve the issue of wafer foundry competition between Taiwan and South Korea. Regarding the visit of Qing Guixian, TSMC said on April 15 that it would not comment on market rumors. Yunda posted a message on LinkedIn confirming Qing Guixian’s visit. It is reported that Qing Guixian also visited the 5G Open Lab jointly built by Yunda and Intel.

　　On the morning of the 2 nd, Ms. Lin, who lives in a community in Longchi Street, Liuhe District, Nanjing, went out early in the morning and found a teenager in school uniform squatting in the grass next to the unit building; When Ms. Lin came home at 5 o’clock in the evening, she still saw the child sitting there, with almost no change in posture. She called him and he ignored him. The abnormal behavior of the teenager worried Ms. Lin, and she called the police for help. The police arrived at the scene and learned that the teenager was a junior three student, and his uncle lived in this building. On that day, he stayed here in cut class for one day to play mobile games on his uncle’s WiFi, which made the mother who came to the scene angry with Ms. Yu.

　　The reporter’s investigation found that the popularity of smart phones and children becoming "mobile phone controllers" have become a common worry for many families. Yangzi Evening News All-Media Reporter Ren Guoyong Correspondent Lu Gongxuan

　　A crazy teenager.

　　Sit in the grass and rub my uncle’s wireless network to play games.

　　Cut class, a teenager, squatted down to numb his legs and feet one day.

　　"There is a big boy I don’t know downstairs who has been sitting in the grass all day. I don’t care if I call him. Come and have a look." At 5 o’clock in the evening on the 2 nd, Ms. Lin reported the police.

　　After receiving the police, the police of Longchi police station arrived at the scene to check that a teenager was sitting downstairs in a unit of the community. He sat under his schoolbag cushion and held his mobile phone intently.

　　"He has been sitting here in this posture. I saw him when I went out in the morning. I didn’t expect him to be here when I came back in the evening. I don’t know what happened. I called him and he ignored me." Ms. Lin said that she noticed that the child was also enthusiastic and worried about what bad things would happen to him.

　　The policeman walked next to the teenager, and he was still absorbed in playing with his mobile phone, unaware that the policeman was approaching. The policeman patted him on the shoulder, and the boy suddenly got up, but he almost fell down because of numbness in his legs and feet. "What are you doing here?" In the face of the police’s question, the child bowed his head and did not answer, only saying that he had something to do.

　　After repeated inquiries by the police, he said that his surname was Cao, and he was in the third grade of a nearby middle school. His uncle lived in this building, and he squatted here to play games on the Internet with his uncle’s WiFi. "I didn’t do anything bad, I just wanted to surf the Internet." He said.

　　Subsequently, the police contacted Cao’s mother. Cao’s mother was surprised when she received the phone call, saying that she didn’t expect her son to go to cut class to play games, and spent a day squatting downstairs in her brother’s house for surfing the Internet.

　　Soon, Cao’s mother rushed to the scene angrily, and immediately scolded him for being unprincipled again and again in order to surf the Internet. Cao’s mother said that her son secretly bought a mobile phone with a birthday red envelope given to him by his elders a month ago. After the parents found out, they criticized him and advised him to return the mobile phone, which was awkward. Later, the parents confiscated the mobile phone, but I didn’t expect him to take it away from his family and come here to play. "He must know that my brother went out these days before he came here to surf the internet. The senior high school entrance examination is coming soon, and he is still so confused."

　　The police also persuaded and educated Cao, and Cao said that he would make up his mind to quit playing mobile phone addiction and prepare for the exam carefully. The police also reminded Cao’s mother to communicate with her children more often, divert his attention from playing mobile phones, and persuade her in time if she has bad habits. After the exchange between the two sides, Cao followed his mother home.

　　Parents’ troubles

　　Smashed the phone, and both girls cried sadly.

　　Do you want to buy it for your daughter now? Mom is very entangled.

　　"I want to use regret to describe my current mood. Now I am in a dilemma!" Ms. Zhang from Laifeng Community in Nanjing told the Yangzi Evening News reporter that her daughter had bought a children’s mobile phone in order to facilitate contact, and she could only answer the phone.

　　But later, my daughter always said that all her classmates used smart phones, and they used smart phones to check their study materials online. Ms. Zhang was hesitant at first. After discussing with her husband, she felt that the times were developing and her daughter’s ideas were reasonable. It might be helpful to use smart phones to access information. Later, I bought my daughter a smart machine with a price of more than 1,000 yuan. After using the smart phone, my daughter quickly played on WeChat and Weibo.

　　"We think there is nothing wrong with sending WeChat Weibo, but now the situation is getting worse and worse." Ms. Zhang said that her daughter’s grades plummeted and the teacher even found her playing mobile phones in class.

　　After discovering the problem, Ms. Zhang began to control her daughter to use her mobile phone. But when my daughter does her homework, she asks her for a mobile phone to consult the information from time to time, but sometimes she finds that she is using QQ or WeChat.

　　Ms. Zhang asked her daughter how to chat? The daughter’s answer is to exchange learning problems with her classmates. In this way, the daughter’s learning efficiency is getting lower and lower. Not long ago, I found my daughter playing small games until the early hours of the morning, and there were novels in the trace of mobile phone search. I clicked and found that my daughter was reading a "messy" article. In this way, the mother and daughter quarreled many times for the mobile phone, and in the end, she smashed the mobile phone.

　　"I smashed my daughter’s mobile phone, and both girls cried. She ignored me for two weeks, and I was heartbroken." Ms. Zhang said that recently, her daughter repeatedly assured her to study hard, proposed to buy a mobile phone again and promised to use it only for consulting materials and communicating with classmates. "I am very entangled, I am afraid to buy it for her, and she can’t control it." Ms. Zhang said.

　　Online small survey

　　Children are forbidden to use smart phones? Not all are objections.

　　In two examples, children have become "mobile phone controllers", which annoys parents. So, at the moment when smart phones are so popular, should children use smart phones? The reporter made a small survey through his circle of friends.

　　Should primary and secondary school students use smart phones?

　　The online survey lasted for one hour, and 51 people voted.

　　A: About 84% are against it.

　　Some parents who indicate the reasons think that underage students are addicted to their opponents’ opportunities, which are difficult to control, and most of them are used for entertainment.

　　B There is one case in which the parents fully agree with the opinion.

　　This parent believes that smart phones are the general trend, otherwise they will be out of touch with society.

　　C about 14% supported by conditions.

　　This part of parents believe that children need to attach conditions to the use of smart phones. If they want to use them, they must know what their children’s purpose is, and it is ok to check the study materials.

　　Teacher’s opinion

　　Every time a parent-teacher meeting is held, many parents complain to the teacher. Children can’t live without mobile phones all day. Should they use them? How can I quit cell phone addiction? Jiang bo, a senior teacher and grade leader of a senior middle school in Nanjing, said — —

　　Even using a mobile phone to check information has great disadvantages.

　　Jiang bo thinks that the only advantage for students to use smart phones is that they are easy to contact.

　　"Access to information is a cover. I found that the questions and answers of some so-called learning software are copied from each other, and there are many mistakes and typos. Students who are used to finding answers online lose the ability to think independently. I strongly appeal to students from primary school to high school to stay away from smartphones." Teacher jiang bo thinks that students who are used to finding answers through the Internet will have a decline in their habit and ability to use reference books, and their learning efficiency is very poor. Usually, they click on a window and another one pops up on the Internet. Students are so curious that they can’t control their reading that they can’t concentrate on completing their homework. Indulging in mobile phones is not good for health, typically, the eyesight drops, and you can only see farther if you look up. Holding mobile phones all day long causes some students to have poor face-to-face communication skills; Some parents are afraid that their children will be out of touch with society without using smart phones. This kind of worry is unnecessary. Mobile phones, like computers, can be learned as soon as they are learned, and there is no need to hold them every day. The mobile phone network has a search function, so it is difficult for parents to monitor whether the content they read is healthy or not.

　　Parents should set a good example for children to quit cell phone addiction.

　　How to quit cell phone addiction? Teacher jiang bo said that depending on the situation, some parents are strong and radical. If they don’t agree to their children’s demands, they will not agree, confiscate their mobile phones and shut down the Internet. Some students have problems in their early education, and their parents have not established an authoritative image at home, and they can’t do the three chapters of the contract. Even if their mobile phones are confiscated and the network is cut off, the effect is not good. Some parents can’t stand the soft grinding and hard foam, but still return their mobile phones to them. When the mobile phone is smashed and the network is closed, it will stimulate such children’s rebellious psychology and stronger curiosity about smart phones. A better way is for parents not to hang their heads all day playing with their mobile phones, but to turn off the home network skillfully, such as changing passwords, limiting traffic, limiting phone bills, and reading famous books on paper. Let children know that mobile phones are just tools and toys, and do not deny that mobile phones are getting more and more fun, but there are more exciting things in life. Parents should take their children to participate in colorful outdoor activities on rest days to divert their attention from mobile phones.

　　● Children’s voice

　　Hungry for respect, disgusted parents smash mobile phones.

　　Yangzi Evening News reporter also communicated with some middle school students. Some students also admitted that mobile phones are basically used for entertainment except making phone calls and finding answers. Sometimes parents will get angry with them after playing for an hour or two.

　　"I am more disgusted with my parents’ tough tone, and it is even more unacceptable to smash my mobile phone." Liu Tong Jr. said that sometimes it was late at night when he was playing with his mobile phone, and he knew that it was not good for him, but the momentum of his father rushing in made people sad.

　　Liu Tongxue Jr. said that even if he made a mistake, he hoped parents could communicate in an equal tone. "Confiscation when you come in is disrespect and distrust," Xiao Liu told reporters.

　　The teacher’s truth is in place, and the child’s voice should also be heard. But have you noticed that children are actually concerned about the same problem at a different level from us adults? They are more concerned about the attitude of parents when dealing with the use of mobile phones than whether they use the mobile phones themselves.

　　Therefore, we want to remind parents that every child has his own personality characteristics, and parents should consider their children’s situation comprehensively, find a communication method suitable for them, and handle this "mobile phone problem" well.