BYD was "rumored"!

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Without Rosaceae, where can there be spring?

It is said that there are about 124 genera and more than 3,300 species of Rosaceae, and most of the flowers we see most often belong to the Rosa family, which is more powerful than any department in human history.
Produced by: China Popular Science Expo
In spring, the earth warms up and everything begins to stir. Can’t you hold back the heart of going out for a spring outing? Anyway, Xiaobian really wants to skip work and enjoy the flowers!It is said that there are about 124 genera and more than 3,300 species of Rosaceae, and most of the flowers we see most often belong to the Rosaceae family.Its variety is more powerful and huge than any department in human history. It is really the "one bully" in spring!
Rosaceae is divided intoFour subfamilies, Spiraea subfamily, Applesubfamily, Rosasubfamily and Lyiaceae.And today we mainly come to know the two most common subfamilies.Apple subfamily and Li Yake, know 7 genera,Peach, plum, apricot, pear, cherry, apple and papaya.Looking at these genera, this small series said that flowers are not beautiful, I don’t care anymore, I just drool a little!
But I will try to hold back. After all, I’m not a blogger. I’m a serious science popularization gentleman. Come and have a look!
I. (Lyiaceae) Plum
1. Li
it is saidLi Bai, a teenager, wrote a poem "Li Hua is in full bloom and a tree is white"Let his father feel that his son can become a great poet when he grows up, so he takes two words from the poem as the name of Li Bai.The beginning of the story is so unexpected, although I don’t know whether it is true or not, but that poem does write the characteristics of Li Hua’s gray.
Plum, flowers and leaves come out together, two or three flowers are born on the branches, the stamens are yellow and the pedicels are long.
2. Purple leaf plum
Originally a purple leaf variety of cherry plum, it has become one of the common ornamental trees because its purple leaves are dazzling in a clump of green.So you are a product of mutation.
Image source ppbc: Liu Bing
2. (Lyiaceae) Sakura
sakura
Cherry blossoms generally have slender flower stalks, corymbose inflorescences, notched petals and horizontal stripes on branches. At present, there are two common cherry blossom varieties in China, one is Hejin Sakura and the other is Yoshino Sakura.Remember the romance of five centimeters per second under the cherry trees in those years?
1. Hejin Sakura,Named after its discovery in Hejin Town, Japan, it is the earliest cherry blossom. Those who go to Japan to enjoy cherry blossoms very early are mostly Hejin Sakura, which is the representative of early cherry blossoms. The petals are dark pink and the buds are light yellow. The flowers and leaves alternate with each other, which is beautiful.
Image source: www.kenphoto.com  
2, Yoshino Sakura dyed wellAlso known as "Tokyo Sakura" or "Japanese Sakura". It is a variety cultivated after artificial hybridization. The flowers are pale pink when they just bloom, and gradually turn white after they are completely open. The stamens are shorter. Pink and white flowers are adorned with branches, gorgeous and elegant, and are loved by more and more people.
Image source: wikipedia  
Iii. Peach (Lyiaceae)
peach
Because of Tao Yuanming’s Peach Blossom Garden, Taolin has been the representative of the ideal world since ancient times. The peach blossom originated in China is the object of praise from ancient times to the present."The peach dies, burning its splendor."Pale pink flowers, bright and charming.So how do you distinguish the blossoming peach blossoms from the flowers?
When a peach blossom is in full bloom, it usually grows new leaves, showing the state of flowers and leaves coming out together. In addition, a peach blossom is generally a solitary flower, that is, a flower is born alone on a twig. Having no or extremely short pedicels.
Image source: wiki  
Iv. Apricot (Lyiaceae)
Step 1: apricot
The Ming Dynasty’s Guang Qun Fang Pu describes apricot flowers:"Leaves like plum, big difference, reddish in color, round and sharp. The flowers bloom in February, and the unopened color is pure red. When they bloom, they are white, slightly reddish, and when they fall, they are pure white. "Apricot flowers are pure red when they are not in bloom, which means the deep red calyx of apricot flowers. Dark reddish-brown branches and calyx are signs of apricot flowers. In addition,The calyx is erect from bud to first bloom, and often reflexed after flowering.. Petals are nearly round, without pedicels, and flowers first and then leaves. These are the distinguishing features of apricot flowers.
Image source ppbc: Zhu Xinxin
This one can clearly see the sepal inversion.
5. (Malinae) Pyrus
pear
Cen Can’s "is like a spring gale, come up in the night and blowing open the petals of ten thousand pear trees" compared Snow White to a pear flower, which, though metaphorically speaking, also highlighted the biggest feature of pear flower, namely, its white flowers.. And the purple-red stamens in the white petals have become a unique representative of pear flowers. Of course, as an apple subfamily, 2-5 stigmas are also an important symbol to distinguish it from the species of Lyriaceae.
(Malinae) Malus
"Qunfangpu" records that "there are four kinds of begonia, all of which are woody: Begonia sessilifolia, Begonia pendula, Begonia Xifu and Begonia papaya, which are commonly called’ four kinds of begonia’". However, these four products belong to two genera in botany. Malus pendula and Malus Xifu belong to the genus Malus, while Malus sessiliflorus and Malus papaya belong to the genus Malus.
1. Begonia pendulaThe petals are pink. With more and more cultivated species, there are double petals and white flowers, but the name of the flower, the long drooping filiform pedicel and the upside-down flower are the identification points of Begonia pendula.
2. Xifu BegoniaIt is called "sea red" in Compendium of Materia Medica and can be used as medicine. Petals are mostly pink. Compared with the shyness of drooping begonia, Xifu begonia proudly blooms with a gesture of looking up at the sky.One is like a little jasper, and the other is like a good family. Do you know how to distinguish?
Seven, (Apple subfamily) Chaenomeles
1. Begonia pedunculata
"Trivial Record" once said: "Cherry grafted with stem begonia becomes drooping begonia; If the pear tree is attached to the stalk, it will become Xifu. "It can be seen that there are genes of begonia sessilifolia in the above two kinds of begonia with national color and fragrance. However, compared with the pink and delicate of Malus pendula and Malus Xifu, Malus pedunculata has its own unique charm.
Crabapple with stem is also called wrinkled papaya, and it is recorded as "papaya" in Compendium of Materia Medica. Its flowers bloom before the leaves, with brilliant red, light red or white. Pedicels are so short that they stick to branches, hence the name of sticking pedicels.
2. Papaya begonia
In the Book of Songs, papaya begonia is called Mutao.It is also called "Chaenomeles tomentosa" in Chinese flora. Its petals are reddish or white, and the fruit is fragrant. The flowers of Begonia papaya and Begonia sessilifolia are equally short and thick or nearly sessile, so it is difficult to distinguish them. However, Begonia sessilifolia is usually a cluster of 3-5 flowers, while Begonia papaya is a cluster of 2-3 flowers.
I don’t know if you are satisfied with the Rosaceae flowers that Popular Science Jun brought to you today.From peach blossom to pear blossom, from Li Bai to Cen Can, from The Book of Songs to Compendium of Materia Medica, there are both the romance of cherry blossoms and the delicious fruit that can be seen soon. I don’t need to say much, so let’s have a spring outing!
(Note: The pictures in this article are from the Internet. )
This paper is a comprehensive compilation from China’s book "Who are these flowers and flowers?"? Author: Xu Wenxiu, Wuhan Botanical Garden, Chinese Academy of Sciences
This article is from "China Popular Science Expo", please indicate the source.
Editor: Zhao Panpan
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Never buy it! Although the fireworks in online celebrity are beautiful, be careful of "explosion"

Recently, a kind of "steel wool fireworks" has been highly sought after on the short video platform. After the steel wool is ignited and shaken, it can create a fireworks-like aperture and beam. Although the effect is gorgeous, there are many security risks. During the Spring Festival holiday just past, Ms. Hong, a citizen of Taiyuan, proved how dangerous online celebrity steel wool is with her personal experience.
On February 16th, news came from the office of the State Council Security Committee that all the online celebrity fireworks were taken off the shelves. If citizens have already bought online celebrity fireworks, put them away quickly.
Steel wool fireworks
Playing with online celebrity fireworks almost caused a fire.
"This year’s New Year’s Eve must play this with the TA around us, so that the unhappiness of the whole year will dissipate with the fireworks." On the short video platform, there are countless videos holding "fairy wand" and throwing out gorgeous sparks. However, many people paid a heavy price for playing cool with online celebrity fireworks.
"The burning time is short, but the temperature is super high. When Mars came out and lit something, I was blinded. " Recalling the experience of New Year’s Eve, Ms. Hong is still a little scared. After seeing the video of others playing with online celebrity fireworks on Tik Tok, she bought it years ago and wanted to play with her friends. Unexpectedly, on New Year’s Eve, when she was throwing fireworks with her friends in the community yard, she accidentally lit the sundries in the trash can next to her. Sputtering Mars was enlarged in an instant, and all the debris in the trash can was ignited. Fortunately, it was not far from the community security room, and the security guard came in time with a fire extinguisher, which did not cause more losses.
I wanted to shoot the gorgeous scenery of fireworks on New Year’s Eve, but I ended up calling people everywhere to put out the fire. A few dollars of gadgets were bought in exchange for an unknown amount of property compensation. Later, Ms. Hong found that online celebrity fireworks not only lit the trash can, but also many sparks landed on her clothes, burning out many small holes, and the new clothes for the New Year were scrapped. "It’s really super dangerous and very easy to get into trouble." She quickly advised buyers who want to buy online celebrity fireworks in the comment area of e-commerce platform.
In addition, Shanxi Evening News reporter also saw that some users accidentally lit their hair, down jackets and green belts on the short video platform … The gorgeous fireworks effect is short-lived, but the damage it brings is immeasurable.
Ms. Huang of Taizhou was playing with this "online celebrity Fireworks" in the parking lot, and her best friend filmed a video for it, probably because she was having too much fun and devotion. The two ladies did not find that the thrown sparks splashed on an innocent private car, causing the hood of the private car to catch fire, and the car worth 110,000 was almost scrapped. Ms. Huang was also administratively detained for causing a fire through negligence.
There is even a couple who punched out the online celebrity fireworks at the top of the mountain. As a result, it is conceivable that the flying sparks ignited the forest and caused a fire. The perpetrators were detained for 15 days and fined 500 yuan. They will also bear the corresponding ecological compensation and indirect losses of more than 60,000 yuan.
Online celebrity fireworks are highly sought after, and e-commerce can easily sell 50,000+per month.
At present, "steel wool fireworks" has become a commodity in online celebrity near the end of the year. Shanxi Evening News reporter searched for keywords such as "steel wool fireworks" and "online celebrity fireworks" on the e-commerce platform, and found that the monthly sales volume of a single store reached "50,000+".
In the description of this product, some merchants say it is "cold fireworks", which is very safe; There are also business tips: the product has the risk of burning the skin, and fire-proof clothing will be attached when shipping. Most businesses are supplemented by glossy photography to attract consumers.
However, in the product comment area, the buyer said after purchasing and using the product that this kind of "steel wool fireworks" is quite fun, but it is not really "cold" and has no temperature. On the contrary, the sparks scattered during the discharge process will not only burn your clothes and hair, but also ignite when you meet other combustible materials.
All these online celebrity fireworks online and offline were removed from the shelves.
On February 16th, the Office of the State Council Security Committee organized a special meeting to deploy and investigate and crack down on illegal activities involving the production, transportation and sales of luminescent fireworks and "steel wool fireworks". Comprehensively investigate the illegal acts involving cold light fireworks and "steel wool fireworks", find out the situation and establish a ledger. For the illegal problems found in the investigation, it is necessary to strictly implement the county-level territorial supervision responsibility and ensure that the investigation and punishment are in place. Cold light fireworks and electronic firecrackers equipped with cold light fireworks should be strictly supervised in accordance with the Regulations on the Safety Management of Fireworks and Firecrackers and other laws and regulations, and severely punished for cracking down on unauthorized production, transportation and sales. Steel wool should be strictly managed according to inflammable dangerous goods, and the production, sale and discharge of steel wool as fireworks should be severely cracked down according to law.
In addition, the notice clearly requires that all the "steel wool fireworks" currently sold in physical stores and online platforms should be removed from the shelves and properly disposed of; For steel wool used in industrial production and residents’ life, it is necessary to ensure normal production and supply and prevent simplification and "one size fits all". We will implement the main responsibility for the safety of delivery logistics enterprises, and severely investigate and punish the acts of mailing cold light fireworks and "steel wool fireworks" according to law. For all kinds of illegal acts, which constitute a violation of public security management, the public security management punishment shall be given according to law; If a crime is constituted, criminal responsibility shall be investigated according to law.
Do you know the common sense about "cold fireworks"?
"Cold fireworks" is highly sought after, but there are many misunderstandings about "cold fireworks", and the hidden security risks are often ignored. On February 16th, Shanxi Evening News reporter interviewed relevant experts from the Provincial Fire Corps to sort out the common sense of "cold fireworks".
What are cold fireworks?"Cold fireworks", also known as "cold light fireworks", is a kind of fireworks and firecrackers. Because the temperature drops rapidly after the flame (spark) is ejected, the temperature drops to about 40℃ 50 cm away from the injection port, so it is commonly known as "cold fireworks".  Fairy wand, hand-held electric fireworks, birthday fireworks and stage fountain cold fireworks are all "cold fireworks". "Cold fireworks" are inflammable and explosive dangerous goods, which have great hidden dangers. When it is discharged, the temperature at the nozzle is as high as 700℃ to 800℃, which will burn the human body. When discharged, it can ignite the surrounding combustible materials and cause a fire. If the transportation process is not in compliance, there are also great security risks.  How to use "cold fireworks" safely  As fireworks and firecrackers, the basic attribute of "cold fireworks" which belongs to inflammable and explosive dangerous goods has not changed. When producing, managing, storing and discharging, we must strictly abide by the provisions of fireworks and firecrackers safety management, and we must also obtain the corresponding fireworks and firecrackers safety license when producing, managing and transporting. Must use qualified products, not indoors or in any place where fireworks and firecrackers are prohibited. Never set it off against flammable materials and people.  Steel wool is not "cold fireworks"  Recently, the "steel wool" fireworks in online celebrity directly ignited metal filaments, and the flame (spark) temperature was extremely high, reaching over 2000℃. "Steel wool" does not belong to fireworks, not to mention cold fireworks, and it is extremely dangerous when discharged. Everyone must pay attention to safety to avoid personal injury and fire accidents.
Written by: Shanxi Evening News, all-media reporter Yang Jing
Editor: Yan Ting, all-media editor of Shanxi Evening News
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What are the bottlenecks for new energy vehicles to accelerate their entry into the rural market?

  Xinhua News Agency, Beijing, September 7th Question: What are the bottlenecks for new energy vehicles to enter the rural market?

  Xinhua News Agency "Xinhua Viewpoint" reporters Huang Xing and Xiang Dingjie

  "It is very cost-effective to buy new energy vehicles now, and it is tens of thousands of yuan cheaper to count various preferential policies. The car is very environmentally friendly, its endurance performance is good, and it is economical and affordable. " Recently, Cao Fuping, a villager from Guang Shun Town, Changshun County, Guizhou Province, bought a Geely Galaxy L7.

  A survey by Xinhua Viewpoint reporter found that with the help of policies, new energy vehicles are accelerating their entry into the rural market. However, there are still some problems in some areas, such as incomplete charging pile facilities and the need to improve vehicle adaptability. It is still necessary to speed up the construction of charging facilities, enrich rural vehicles and improve support policies to help new energy vehicles go to the countryside.

  New energy vehicles speed up their drive to the rural market.

  Walking in many rural areas, from time to time, you can see new energy vehicles with green cards whizzing by.

  Walking into the charging station of Fuhuan Town, Qijiang District, Chongqing, the owner Liu Gang is charging his polar fox car. Last year, Liu Gang spent more than 220,000 yuan to buy this car. "It only takes more than an hour to charge 80% of the electricity, and it costs less than 1 yuan’s money for every 1 kilowatt hour, which is convenient and affordable. The driving experience of electric cars is also great. " Liu Gang said.

  The picture shows the owner charging the car at the charging station in Fuhuan Town, Qijiang District. (photo by Yan Jiangkui)

  Ye Peng, deputy general manager of State Grid Chongqing Qijiang Power Supply Company, told the reporter that in 2022, the company invested 300,000 yuan to build a charging station in Fuhuan Town; After the charging station was put into operation, the number of new energy vehicles in the town has gradually increased to more than 40, and many villagers continue to buy new energy vehicles.

  In recent years, a series of policies have been introduced to encourage new energy vehicles to go to the countryside. In July 2020, the Ministry of Industry and Information Technology, the Ministry of Agriculture and Rural Affairs and the Ministry of Commerce jointly issued a notice requesting the organization of new energy vehicles to go to the countryside. In June this year, the Ministry of Industry and Information Technology and other ministries and commissions launched the activity of new energy vehicles going to the countryside in 2023, which will last until December this year, with a total of 69 new energy vehicle models participating.

  Xie Guang, senior director of the strategic planning department of Changan Automobile, said that seven cars of Changan Automobile were selected for this year’s catalogue of new energy vehicles going to the countryside. In order to increase sales, the company introduced a number of preferential policies, such as the best-selling model Benben E-Star giving a discount of 12,000 yuan, while the other model directly dropped 30,000 yuan and then sent the "Three Electricity" (motor, battery and electronic control) lifetime warranty.

  The accelerated improvement of the charging infrastructure has also helped pave the way for new energy vehicles to "go to the countryside". The data shows that in 2020, the number of individual charging piles in Qijiang District of Chongqing was only 24, and the number of new charging piles in 2022 has reached 515, reaching 586 this year. 86% of townships in Guizhou have built charging facilities, and Chongqing is expected to achieve full coverage of all township charging facilities by 2025.

  According to the data released by China Association of Automobile Manufacturers, the sales volume of new energy vehicles going to the countryside increased by 80%, 169% and 87% respectively in 2020, 2021 and 2022, driving the cumulative sales of new energy vehicles going to the countryside to more than 4.1 million. The industry expects that the sales volume of new energy vehicles to the countryside will continue to climb this year.

  Popularization still needs to go through three hurdles

  Although the sales of new energy vehicles in rural areas continue to increase, the penetration rate in rural areas is still low. According to the data of the National Passenger Car Market Information Association, in March this year, the penetration rate of pure electric passenger cars in counties and townships was 16%, and the penetration rate of plug-in passenger cars in counties and townships was 8%.

  The industry believes that there are still many problems to be solved before new energy vehicles can enter the "fast lane" in the countryside.

  — — Charging facilities need to be further improved. The reporter learned that the current rural new energy vehicle market is still in the initial stage of popularization, and the construction of charging facilities in rural areas is still lagging behind. There are problems in the construction of charging piles, such as low social investment willingness, difficult profitability and difficult equipment maintenance.

  "There are too few charging piles and they are often found everywhere." A new energy owner in Longshan Town, Longli County, Guizhou Province said that local public charging piles are often unavailable, and it is common to run for 10 to 20 kilometers for charging. Zhang Le, a resident of a township in Chongqing, told reporters that he once wanted to start with a new energy vehicle, but he finally chose a fuel vehicle because he was worried that it was inconvenient to charge.

  — — Models and prices should be more suitable for the needs of rural consumers. Rural residents are more sensitive to price, and quite a few people tend to buy new energy vehicles below 70,000 yuan. Every year, cars go to the countryside mainly in small cars and mini-cars.

  Some rural residents prefer cheap old scooters. Wang Ping, the branch secretary of Haimakong Village, xiuwen county, Guizhou Province, said that almost every household in the village has an old scooter. "Although the old scooter has potential safety hazards, it is really cheap and has a low threshold for use."

  According to the car salesmen interviewed, some micro new energy vehicles are selling well, but at present, there are few new energy vehicles that can take into account the use scenarios such as rural cargo pulling and agricultural production.

  — — The sales service system needs to be further improved. The reporter learned that the traditional fuel vehicle dealer system is deeply rooted, and there are generally 4S stores or dealer channels in the county. However, new energy vehicles often adopt online booking and new direct sales mode, and the dealer system of car enterprises in the county is not perfect, which leads to the underdevelopment of new energy vehicle finance, insurance, used cars, after-sales and maintenance.

  Take multiple measures to unblock the "blocking point"

  Industry experts believe that compared with cities, the rural new energy vehicle market will still be a blue ocean. According to the Study on Electric Vehicle Travel in Rural Areas of China published by China Electric Vehicle committee of 100, it is estimated that by 2030, there will be nearly 160 vehicles with 1,000 people in rural areas of China, with a total ownership of over 70 million vehicles, and the market scale may reach 500 billion yuan.

  Xu Haidong, deputy chief engineer of China Automobile Industry Association, suggested that efforts should be made to improve public charging facilities, enrich rural vehicles and support policies, and accelerate the assistance of new energy vehicles to the countryside.

  First of all, focus on building public charging facilities. The relevant person in charge of State Grid Chongqing Electric Power Company suggested that public charging facilities should be given priority in counties, townships, enterprises and institutions, commercial buildings, transportation hubs and other places, and at the same time, the existing rural residential communities should be accelerated to carry out the transformation of charging facilities construction conditions according to local conditions, and the requirements for charging infrastructure construction in new residential communities should be implemented.

  The first integrated photovoltaic charging station in Chongqing, which was completed and put into use on June 16, 2022 (photo of drone). Xinhua News Agency reporter Liu Yushe

  "Rural areas are mostly ‘ One household and one hospital ’ The living form can be actively explored ‘ Photovoltaic+energy storage+automobile charging ’ Integrated charging mode. " Xie Guang said. The reporter found that at present, the model has been implemented in scenes such as expressway service areas, but it is rarely used in rural residents’ homes.

  Secondly, we should speed up the supply of products to the countryside. Xu Haidong suggested that new energy vehicle companies should be encouraged to develop more economical, practical and marketable vehicles according to the characteristics of consumers in rural areas, especially products such as micro-trucks, micro-trucks and light trucks. In view of the fact that rural consumers have low requirements for cruising range, the number of batteries can be reduced to reduce the cost and price.

  In addition, it is necessary to guide new energy vehicle companies to sink their sales and service networks. Lin Yun, an associate professor of Chongqing University, and others suggested that car companies and third-party service enterprises should be guided to speed up the construction of joint business outlets in rural areas, establish a supporting after-sales service system, regularly carry out after-sales service activities in the countryside, and provide emergency rescue services.

The New Year’s Day Carnival in this primary school is full of books and colorful.

Di Xin, a journalist with extreme eyes.

Correspondent yang guanying

Intern Luo Wenbin

"Teenagers have their own juvenile madness, and their bodies are like mountains and rivers …" On December 29th, Spark Primary School in Qiaokou District of Wuhan ushered in the New Year’s Day celebration and commendation activities of "Walking with books to light up childhood", and all teachers and students celebrated the festival with songs and laughter. In the classroom of Class 3, Grade 6, the students used passionate singing and dynamic dancing to show the youthful spirit and feelings of home and country.

This activity is divided into grades, and each grade and class has different characteristics. Each class carefully arranged the classroom, prepared wonderful programs, and held a New Year’s Gala between classes. The national wind, folk music, rotation, singing and dancing of powerful teenagers, and the interpretation of textbooks and dramas were colorful and energetic, which surprised all the parents present.

The third-grade students took "The Book ……" as the index, and jointly told the stories of four names of Hanzheng Street, namely "Wucai Zhengxiang, Shimatou Zhengxiang, Jijiazui and Dashui Lane". The teenagers told the audience about the traditional culture and historical origin, and showed the culture of Hanzheng Street. Each class also interprets the contents of the book with the theme of "Blessing in the Book". Class 4, Grade 3 students share their reading gains and convey the joy and happiness of reading.

The first-year students’ classroom is full of passion, and the children’s vitality has infected the whole campus. Class 1, Grade 1 students brought a recitation of "Spring Dawn", which combined recitation with singing, and the children walked into the wonderful spring world together. The teenagers in Class 3, Grade 1 started a joyful chorus with a song "Happy New Year", which pushed the activity atmosphere to a climax, and they could feel the jubilation of the New Year in their loud songs.

Compared with the immature and green children in the lower grades, the performances of the sixth grade students are more mature, showing their love and pursuit of culture. Class 2, Grade 6, dressed in elegant Hanfu, performed "Poetry skewers". Ancient poetry has brought the audience into a quaint world of books, making everyone indulge in the charm of poetry. A class of students appeared in the gesture dance "Wanjiang". Their fingers were as agile as flying, and their dancing was graceful, as if they were telling their deep affection and good wishes for the motherland in silent language.

In addition to songs and dance performances, there are also talented people who perform musical instruments. Li Ruoxuan, a student from Class Two, Grade Four, wowed four people with a pipa solo-Yi Dance Music. Between her light gathering and slow twisting, strong feelings come to me with the string sound: the cottage with hazy moonlight, the Yi girl who dances lightly, the strong guy who jumps around the fire … Frame by frame, the scenes are very romantic and beautiful, and the original "the large strings hummed like rain, the small strings whispered like a secret". Hummed, whispered-and then were intermingled, like a pouring of large and small pearls into a plate of jade. " It is so exciting.

The New Year’s Day Carnival of Spark Primary School lit up the joy and vitality of children’s childhood. Through wonderful performances, the children not only showed their talents, created a campus atmosphere full of books, but also conveyed their love and expectation for the motherland and a bright future.

(Source: Jimu News)

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Asian Games Foresight | National Table Tennis Sword Finger 7 Gold Goals Continue to Defend the Glory of National Games

The table tennis competition of the 19th Asian Games in Hangzhou will be held from September 22nd to October 2nd in the Gymnasium of Gongshu Canal Sports Park in Hangzhou, which will produce 7 gold medals in men’s and women’s teams, singles, doubles and mixed doubles. As the king of the China sports delegation, the China table tennis team has sent all its main teams to win 7 gold medals at home and continue to defend the national glory.

The Asian Games is often called the "senior high school entrance examination" before the Olympic Games, which plays an important role in discovering talents, training teams and testing the effectiveness of preparations. China first participated in table tennis in the Asian Games in 1974, and has won 66 gold medals so far. In recent three Asian Games, table tennis produced 19 gold medals, 18 of which were won by China team. In this Asian Games, the primary task of table tennis is to train for Paris, and to keep defending the glory of the national ball with the sword pointing to the goal of 7 gold medals.

Recently, Guoping won all seven gold medals during the Pyeongchang Asian Championships and returned home with a full load. Walking off the podium, everything starts from scratch. After a brief rest, all the main players have arrived in Hangzhou and started field adaptation training in the venue. Liu Guoliang, Chairman of the Table Tennis Association, is the leader of the Asian Table Tennis Team. Fan Zhendong, Wang Chuqin, Malone, Liang Jingkun and Lin Gaoyuan, the "Five Golden Flowers" of men’s table tennis, and Sun Yingsha, Chen Meng, Manyu Wang, Wang Yidi and Chen Xing, the "Five Golden Flowers" of women’s table tennis, are all listed. Liu Guoliang said that the Hangzhou Asian Games is the last comprehensive event before the Paris Olympic Games. In terms of home pressure and competition atmosphere, the test of athletes is more comprehensive than that of the World Table Tennis Championships, and the team will focus on me and defend its honor.

In the 2018 Asian Games in Jakarta, there were no men’s and women’s doubles events, and Guoping finished with a total of 5 gold medals. In Hangzhou Asian Games, men’s doubles and women’s doubles were added to table tennis, which is also a big challenge for the athletes who are involved in the event. Li Sun, the head coach of China Table Tennis Team, said in an interview with the media that the team has made targeted arrangements for concurrent events in closed training, and through actual combat simulation, the athletes’ ability to rationally allocate energy and physical strength while taking care of multiple events has been cultivated.

At present, the absolute dominance of Guoping in Asian table tennis is still hard to shake, and its main competitors are mainly Japanese, Korean and China. Zhang Benzhihe and Lin Yunru are both outstanding young people, and they all have certain strength to impact the national table tennis players. Hayata Hina, Ito Meicheng, Shen Yubin and other female players are relatively difficult to compete with the "five golden flowers" of table tennis. In recent years, South Korea’s doubles have risen rapidly, among which Zhang Yuzhen/Lin Zhongxun, Tian Zhixi/Shen Yubin ranked first in men’s and women’s doubles respectively, and their strength should not be underestimated. South Korea’s mixed doubles group Lin Zhongxun/Shen Yubin, ranked third in the world, is also a strong contender for the gold medal.

The table tennis competition of this Asian Games was held in Gongshu Canal Sports Park Gymnasium, which produced seven gold medals. The first is the group match between men’s team and women’s team, which will start on the morning of September 22, and the team final will be held on September 26. Guoping will attack the men’s team for eight consecutive championships and the women’s team for five consecutive championships. Subsequently, the table tennis event of the Asian Games will enter the individual schedule. The mixed doubles champion will be decided on the evening of September 30th, the men’s doubles and women’s singles finals will be held on the evening of October 1st, and the women’s doubles and men’s singles finals will start on the evening of October 2nd.

Text/Beijing Youth Daily reporter Zhou Xueshuai

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Women’s physiological characteristics have been changing? Have you mastered the physiological characteristics of each stage?

Women are divided into several stages according to their physiological characteristics, from the fetal period to the neonatal period, and then into childhood and adolescence. With the decline of ovarian function, women gradually enter menopause and old age. At different stages, the physiological characteristics of women are constantly changing again.

1. Fetal period

Sperm and egg combine to form a fertilized egg, which is implanted in the uterine cavity and then gradually develops into a fetus. There are 23 pairs of chromosomes in the body, one of which is decisive for development.

2. Neonatal period

Because the fetus is influenced by the mother’s hormones in the uterus, the breast, ovary, uterus and vulva have developed initially. After the baby is born, the hormone level in the blood will drop rapidly, and it is easy to have a small amount of vaginal bleeding. Don’t worry too much, it will usually subside in a few days.

3. Childhood

Girls grow faster in childhood, but the reproductive organs develop slowly. Before the age of 8, the function of hypothalamus-pituitary-ovary axis was inhibited, the reproductive organs were not developed, and the vaginal epithelium was weak and wrinkle-free, which could not resist pathogenic bacteria and was prone to inflammation in children.

4. Adolescence

Girls enter puberty from the age of 10 to 19, and their reproductive organs develop rapidly, and their sexual functions are gradually improved. They begin to have menarche and their breasts develop accordingly. In adolescence, all parts of the body develop rapidly, and the secondary sexual characteristics gradually emerge.

5. Sexual maturity

Sexual maturity, that is, ovarian functional maturity, results in periodic secretion and ovulation of sex hormones. Usually from the age of 18 or so, after 30 years, this period is a period of vigorous fertility. Due to the influence of sex hormones, breast and reproductive organs also undergo periodic changes.

6, menopausal transition period

Generally, women begin to enter the menopause transition period from about 40 years old, which generally lasts for 1~10 years. During this period, ovarian function gradually declines, follicles cannot mature and eggs cannot be excluded, so menstruation becomes irregular. When it develops to a certain extent, the follicles in the ovary can be gradually exhausted, which will lead to the decline of ovarian function and eventually enter menopause. Because the estrogen level fluctuates greatly or suddenly decreases, it is easy to cause mental symptoms, leading to night sweats, poor sleep quality, irritability and hot flashes, which is called menopausal syndrome.

7. Old age

When a woman enters old age, the follicle stops, and the ovary can no longer secrete estrogen, but the ovarian stroma can secrete some androgen. Under the action of peripheral tissues, estrogen can be transformed into circulating estrogen. After women reach the age of 60, the ovarian function has completely lost, not only the body is aging and changing, but also the reproductive organs are slowly shrinking and aging. The main symptom is that the estrogen level is low and it can’t resist pathogenic bacteria, which leads to senile vaginitis. Abnormal bone metabolism also easily leads to osteoporosis, which in turn leads to fractures.

Tips

Girls should do a good job in nursing at any time, pay attention to personal hygiene at ordinary times, change their underwear once a day, avoid sharing the same room during menstruation, and change sanitary napkins at least once every two hours. In addition, lead an honest and clean life, master the correct contraceptive methods, and do not take emergency contraceptives indiscriminately, so as to avoid disrupting endocrine and hormone levels, and even make women enter menopause or lead to amenorrhea in advance. Adjust the diet, supplement nutrition reasonably, and do not lose weight by excessive dieting, so as not to affect the development of reproductive organs.

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Running away from Baidu, he became a scientist and entrepreneur! Zeng said that scientists should start their business from the future.

From scientist to entrepreneur, Yu Kai is not the first person to "run away" in the field of artificial intelligence.

Despite the previous achievements in scientific research, joining in entrepreneurship means facing the reality of bone feeling.

In March 2015, Yu Kai said in an interview: "If a business can get the resources it deserves to do what it wants, then choose to start a business; If you join a big platform and have more resources to do one thing, then join a big platform. " Sure enough, three months after that, he left Baidu and founded Horizon.

Yu Kai

From the initial "no one pays the bill" to October this year, Horizon successfully won the investment of 2.4 billion euros from Volkswagen, setting the largest single investment record for Volkswagen in the past 40 years, and establishing a joint venture company with audi ag’s software company. The transformation of Yu Kai’s identity can be described as unsuccessful.

Before becoming the founder of Horizon, Yu Kai’s label was the top international scholar in the field of machine learning and the main promoter of deep learning technology in China. His published papers were cited more than 20,000 times, and he won the silver award for the best paper in ICML-2013 International Machine Learning Conference. He himself also served as the domain chairman of ICML and NIPS, two major conferences of machine learning.

Yu Kai’s achievements in the academic field go far beyond this.

NEC Research Institute of the United States was once one of the major centers of international machine learning research. During his tenure, Yu Kai established a highly prestigious technology research and development team in Silicon Valley. This team is one of the earliest and most active teams in the field of deep learning in the world. A series of technologies led and developed by him have pushed image object recognition to a new level worldwide, and won many international famous awards.

After joining Baidu in 2012, the voice technology team, deep learning technology team and image technology team led by Yu Kai won the "Baidu’s highest award" three times in succession, creating records of various technical and business teams within Baidu.

In the eyes of outsiders, Yu Kai at that time, both academically and professionally, was smooth sailing.

But at this time, he chose to start a business.

Yu Kai’s reason is straightforward: "In the past three years, what I have done at Baidu is to promote artificial intelligence in the cloud. But I think there will be a bigger trend in the next few years that I have to do: from artificial intelligence in the cloud to artificial intelligence around everyone. "

Therefore, Yu Kai, who has always believed in "doing things is the most important thing", founded Beijing Horizon Information Technology Co., Ltd. in July 2015, focusing on edge computing in the field of artificial intelligence.

From the moment the company was founded, in his own words: First of all, I will forget that I am a scientist more and more.

To be a scientist, you can put the mainexperienceDo research and write papers, but as an entrepreneur, you should focus more on business and customer needs.

Yu Kai has always wanted to grasp some "truth" things in this process, for example, things that can really create long-term value. With this idea in mind, at the beginning of Horizon’s establishment, he played the slogan of "making brains for machines", and avoided the edge of the field giants, took the edge computing route, and insisted on making AI chips.

It was really hard at first.

When recalling the initial stage of starting a business and determining the development direction, Yu Kai mentioned: At that time, we were predicting a far future, a future that might take 20 years as its dimension. From computers to smart phones, and beyond, what is a bigger computing platform than these? At that time, they were sure,beRobot computing platform. AI chip is the indispensable key to realize this calculation.

Now that we hear about AI chips, it’s needless to say its importance. But when Horizon was founded, not every investor could understand the "blueprint" in Yu Kai’s eyes. As a direct result, the horizon was once unsustainable. Until smart cars become "robots"calculate"The first and biggest landing scene at present, everyone began to understand that Yu Kai had bet on it.

In 2020, smart cars ushered in an outbreak period. As a result, there is a global "lack of core" in the automotive industry.question.

A chip with excellent computing power, like a smart brain, can accurately control the behavior of the vehicle. A series of functions, such as environmental awareness, route planning, driving assistance and so on, advertised by smart cars all need to rely on chips to be realized.

This is also consistent with what Yu Kai has always wanted to do. He has always believed that the real significance of artificial intelligence is not to survive and develop as the opposite of human life, but to support people’s decision-making and enhance their ability. Once the smart car scene is broken down, this ability will definitely spill over to others.floatApplication scenario of robot.

In August 2019, Horizon announced the mass production of China’s first car-class AI chip "Journey 2";

In September 2020, Horizon officially launched the AI chip "Journey 3";

In July, 2021, Horizon released "Journey 5", a high-performance and large-computing, full-scene intelligent central computing chip for the whole vehicle.

……

Yu Kai once said, "The course of a scientist’s entrepreneurship is not based on business opportunities,FromStart in the future. "

This cooperation between Horizon and Volkswagen may be the next future in Yu Kai’s plan.

Analysis of the shipment volume, market size and market competition pattern of China smart speaker industry in 2022 [Figure]

Analysis of industrial chain, market demand potential and enterprise layout of domestic smart speaker industry in 2022 [Figure]

Smart speaker, the product of a speaker upgrade, is a tool for home consumers to surf the Internet by voice, such as ordering songs, shopping online, or knowing the weather forecast. It can also control smart home devices, such as opening curtains, setting the refrigerator temperature, warming up the water heater in advance, etc.

Basic functions of intelligent speakers

Source: Collation of Common Research Network.

Intelligent speaker industry chain includes traditional acoustic-related OEM/ODM suppliers, chip suppliers, voice technology service providers, content providers and channels.

Intelligent speaker industry chain

Source: Collation of Common Research Network.

In 2019, China’s smart speaker market experienced explosive development, with the shipment of smart speakers reaching 45.89 million units, up by 109.7% year-on-year. In 2020, affected by the Covid-19 pandemic, the sales volume of smart speakers reached 36.76 million units, with a cumulative decrease of 8.6%. In 2021, the market shipment of smart speakers contracted by 2.50% year-on-year, dropping slightly to 35.841 million units.

2018-2021 China Smart Speaker Market Shipment Trend

Source: Collation of Common Research Network.

In 2021, China’s smart speaker market was 7.885 billion yuan, up by 14.99% year-on-year. With the continuous integration and improvement of intelligent speaker artificial intelligence technology, the potential of smart speaker consumption market in China will be released in the future, and the industry is expected to usher in rapid growth.

2018-2021 China Smart Speaker Market Scale Trend

Source: Collation of Common Research Network.

At present, the main functions of smart speakers in China are voice interaction, content service and home control. Voice interaction is a voice interaction technology based on voice recognition and semantic understanding, which provides a more natural man-machine interaction mode. Content service and life service are streaming media resources such as high-quality music and audiobooks, and third-party service resources such as take-out and taxi service. Home control is connected to the cloud through networking, becoming a home control center and interconnected with other smart home products. With the development of voice interaction technology, smart speaker products can not only provide content entertainment services and life services, but also connect to smart homes, realize scene intelligent control, and become the control center of smart homes. In the future, the Internet of Things will take voice as its population, resulting in a new business model.

Domestic layout smart speaker manufacturers can be divided into five categories.

Source: Collation of Common Research Network.

What is the market prospect of smart speaker industry? The 2023-2029 China Smart Speaker Market Survey and Investment Strategy Report published by Gongwang has analyzed in detail the relevant definitions of smart speaker industry, the global smart speaker industry market development status, the development environment of smart speaker industry in China, the operation of smart speaker industry in China, the monitoring of the operation data of smart speaker industry in China, the market structure of smart speaker in China, the demand characteristics and trends of smart speaker industry in China, China smart speaker industry regional market situation, China smart speaker industry competition, China smart speaker industry development prospect analysis and forecast, China smart speaker industry development strategy and investment suggestions, etc., to help enterprises and investors understand the smart speaker industry market investment value. If you want to have a systematic understanding of the smart speaker industry or invest in the smart speaker industry, this report is your indispensable and important tool.

Nine -ball, Pan Xiaoting is more than 1 billion, now 39 years old is still single or yellow flower girl

"Nine -ball Queen" Pan Xiaoting, the value of more than 1 billion is conservative. Today, the age of 39 is still single and is still a big daughter of Huanghua.

She once announced her own spouse selection criteria:

1. The face value is high, and the height cannot be lower than 1 meter 76;
2. Mature and stable, you must have your own career;
3. To pursue her actively, if you don’t take the initiative, you would like to miss it;
4. Don’t have filial piety.

Netizens shouted directly: It’s too difficult to take off the order!

There is a saying in the billiard industry called "Men have Ding Junhui, and women have Pan Xiaoting."

Pan Xiaoting is the first player to win the World Championship in my country’s billiard industry. He is the holder of the 9 -ball World Championship, which is therefore called the "Nine Ball Hou".

Pan Xiaoting was born in Jining, Shandong in 1982. His father was a billiard enthusiast and opened a bill for a bill. Due to the excellent ball skills, it is called "Pan Yi".

In Pan Xiaoting’s childhood, he did not show any interest in billiards, but was interested in painting.

She drew perseverance, and one painting has been for several years. Art has also become her dream.

Until college, Pan Xiaoting rarely played billiards. Occasionally, Pan Xiaoting was in a bad mood because of conflicts with his classmates.

As soon as home, she picked up the club of the table to vent her emotions.

What she and her father did not expect was that although Pan Xiaoting had not practiced, she scored several balls at hand.

This is obviously a talented player.

However, at the time, Pan Xiaoting didn’t think too much, and his father only hoped that his daughter could grow up happily and did not deliberately train billiards, but occasionally played.

During the college entrance examination, Pan Xiaoting, who has always liked painting, applied for art colleges. Unexpectedly, it was fell on the list.

For a while, Pan Xiaoting lost his direction in the future and doubted himself.

Fortunately, after repeated consideration, Pan Xiaoting decided to learn billiards with his father.

For her daughter’s future, her father began to train her strictly.

Regardless of the winter or cool summer, Pan Xiaoting play billiards for more than seven hours a day. For a month, it can only take a break, sometimes only half a day.

What makes Pan Xiaoting feel more hard is that in the summer, even the hottest weather, the fans are not opened during training. Pan Xiaoting often sweats hotly and has to continue training.

In winter, even if your fingers are frostbite, you still have to practice.

For her, occasionally wanting to be lazy, she is not allowed.

A boy is even difficult to endure this training intensity, and it is a flower girl.

During that time, Pan Xiaoting thought more than once that her father didn’t love her, so she had a hard time to eat her so much.

Fortunately, Huang Tian lived up to the painstaking people, and Pan Xiaoting’s dedication got the return.

In 1998, Pan Xiaoting’s father, Pan Jian, took Pan Xiaoting to Beijing to participate in the first nine -ball women’s opening game.

In Beijing for a month, in order to save money, the father and daughter lived in a 15 -dollar air -raid hole, eating 10 yuan of fish flavor shredded, and life was very difficult.

Fortunately, the two were not very bad. Pan Xiaoting won the championship in one fell swoop and won 4,000 bonuses.

My father was proud of his daughter, and asked what his daughter wanted to eat?

Pan Xiaoting said excitedly:

"Dad, I want to eat Beijing roast duck!"

Pan Jian Shuang agreed quickly and immediately took her to Quan Jide.

As a result, the father and daughter opened the menu and looked at them immediately!

A roast duck, it costs 156 yuan!

Although the fragrance of roast ducks made Pan Xiaoting sorrowful, she still felt very distressed and pulled her father’s corner and said: "

"Dad, let’s forget, let’s take a look elsewhere."

Pan Jian said to his daughter:

"Girl, eat it when you come, let’s order half!"

So Pan Xiaoting ate it quickly. At that moment, Pan Xiaoting felt her father loved her again.

In order to make parents live a better life, Pan Xiaoting worked harder to train. And on the road of billiards, she also opened all the way.

In 2000, Pan Xiaoting won the championship again in the national sports competition. In the same year, she won 6 national championships.

Since then, Pan Xiaoting has opened a journey to win.

In 2007, Pan Xiaoting won the world championship in the World Championship final and became China’s first billiards world champion.

In addition to getting bonuses, Pan Xiaoting also made a lot of advertisements and received a lot of endorsements. It is estimated that the value is conservative!

There is no doubt that Pan Xiaoting is already the pride of his parents in his career. However, on personal problems, Pan Xiaoting made his parents very concerned.

At the age of 39, she is still single and is still a yellow flower girl.

During the period, although he had a scandal with Ding Junhui, Pan Xiaoting showed that he was just a good friend!

Today, Ding Junhui’s children will make soy sauce, and Pan Xiaoting is still alone.

For the other half, Pan Xiaoting also announced her request:

It seems that it is not high, but it is not found. It is also impressive. Is it really not good for a boyfriend?

In addition to the "Nine Balls" Pan Xiaoting, there is also a particularly excellent woman, which is nearly 40 years old, worth 10 billion yuan, and is still single.

She is a woman who refuses Ma Yun three times, currently the director of Yunfeng Fund, Li Ying.

Li Ying graduated from the Massachusetts Institute of Technology. Because of his high IQ, he was too good, and was appreciated by Ma Yun.

However, Ma Yun invited the other party to join his company three times, but he was rejected.

Until the fourth time, Li Ying promised to serve as a director of Yunfeng Fund.

Today, this strong woman is nearly 40 years old, with tens of billions of dollars, but still single.

In this regard, some netizens said:

Such a woman is not good at climbing, and it is a kind of sadness to be stronger than no one.

Some netizens said:

If you have money, why do you have to get married? Single is cool for a while, and he has been single.

How do you think about this? Welcome to leave a message. The picture comes from the Internet, invading and deleting.