Original serious demographic gossip group serious demographic gossip

Author | Wang Han Ph.D. student in sociology, University of Saskatchewan, Canada

Editor | Zhao Menghan Associate Professor, Population and Development Research Center, Renmin University of China

After the outbreak of COVID-19, all aspects of our lives have been greatly impacted, and education is also an area that has been deeply influenced and changed. Due to the demand of prevention and control, face-to-face teaching was forced to stop. In order to solve the teaching problems of all kinds of students, especially those in the basic education stage, an upsurge of online teaching has been set off around the world since 2020.

Our country has also responded quickly in developing online teaching. As early as January 29, 2020, the Ministry of Education issued a notice: advocating the use of online platforms to achieve "suspension of classes without stopping teaching and learning", so as to gradually restore the order of education and teaching. Subsequently, major universities, primary and secondary schools responded to the call and began to implement online teaching. Although offline teaching was also carried out during the slow epidemic, it was not until this year that offline campus teaching was basically completely restored. It should be said that the implementation of online teaching not only protects the health of teachers and students, but also minimizes the impact of the epidemic on teaching activities.

Of course, the emergence and application of anything new has a complicated impact. There are many difficulties and challenges, but it also brings innovation and hope. With the small series, we will sort out and summarize the influence and enlightenment brought to us by the online courses in the next three years in stages.

Chapter 1

Past lives of online class

As a new teaching method, Internet teaching has two main ways: live teaching and recorded teaching. Live teaching is the real-time classroom teaching and interaction with the help of the network platform, such as the popular Zoom abroad, the Tencent conference commonly used in domestic universities, and all kinds of nails that are collectively scored low by primary school students. Live teaching is equivalent to "moving" the classroom to the network platform. Recording and broadcasting teaching means uploading course videos and related materials made in advance on the network platform for learners to view and learn by themselves. The pioneer of recording and broadcasting teaching is the famous Coursera, and there are similar platforms in China, such as Netease Open Class and China University MOOC.

In fact, before the epidemic, Internet teaching had a broad audience in China, mainly concentrated in college students and adult self-learners. Online courses are widely used in all kinds of postgraduate entrance examinations, overseas examinations and civil service examinations, which makes large-scale training and teaching possible. When Xiao Bian was preparing to go abroad for the exam n years ago, he participated in the GRE full-course and braille class of an institution. At that time, YY voice platform was adopted for online teaching.

Compared with adult learners, students in the basic education stage had less opportunities to contact online teaching before the "online class tide". For basic education, classroom education is not only a form of imparting knowledge, but also an important place for students to make friends and complete socialization. Therefore, compared with the online teaching of graduate students like Xiaobian, students and teachers in primary and secondary schools have encountered many problems in the process of accepting online teaching.

Chapter 2

Difficulties and challenges in online courses

The first challenge that online classes bring to teachers and students in primary and secondary schools is the technical problem. First of all, in terms of network and equipment, some students can’t get a stable network connection due to economic constraints, or they don’t have computers at home. Many students use mobile devices to attend online classes, which may damage their eyesight because of the small screen. In terms of acceptance, primary school students’ acceptance is greater than that of high school students, which may be related to the complexity of the teaching content.

Teachers also have similar network and equipment problems, but what teachers reflect more is their unfamiliarity with teaching software and lack of live broadcast experience. How to organize teaching and interaction in virtual environment is a big challenge for teachers, especially for older teachers, who need to spend more time getting familiar with and applying new technologies. The research points out that most primary and secondary school teachers have negative emotions such as "nervousness and anxiety" when they just turn to online teaching. After using it for a period of time, with the improvement of teachers’ mastery of new technologies, their self-confidence in online teaching has also improved significantly. Technology-related problems are obvious in the initial stage of online course application. With the increase of familiarity, most of the problems have been solved.

Compared with technical problems, the quality of online teaching is the focus of attention. In a nationwide survey of online classes in primary and secondary schools, most parents said that they didn’t recognize the effect of their children’s learning. The main reason was that parents thought that their children’s autonomous learning ability was poor, and they could not effectively supervise and restrain their children because the teachers were not present. Common problems such as absent-mindedness, inattention in listening, and inattention in completing homework. On social media, Xiao Bian also saw a post. A teacher opened the teaching software to check the homework, only to find that the homework photos uploaded by the students were net maps, and all the students uploaded the same photo. What’s even more outrageous is that in order to avoid the teacher’s discovery, some students added different filters to the photos, and when they saw the students’ "Sao operation", the teacher also said that he was speechless.

The classroom in colleges and universities needs more interaction and discussion between teachers and students, while in online courses, teachers and students lack opportunities for face-to-face communication. The form of online teaching is like a "enough paper" for communication and interaction. Although it is only a thin layer, it is difficult to attract students to break it in class. Without asking to turn on the camera, many students are confused, lying down and listening to classes while walking, and the learning effect is naturally not good.

In addition, due to the differences of students’ family environment and family relationship, online teaching will amplify the influence of family background on students. Children from wealthy families will have a better learning environment and a better learning effect than children from low-income families. Therefore, how to improve the teaching quality of online teaching for students in compulsory education stage is a subject worth studying in the future.

Chapter 3

Surprises and opportunities brought by online courses

The popularity of online teaching has promoted the development of internet teaching technology, innovated teaching methods and promoted the development of various online teaching platforms and software. As a nail, the school-based function is convenient for teachers to check and correct homework and improve teaching efficiency. In the process of developing online courses, teachers have innovated teaching methods and accumulated teaching experience supported by new technologies.

Although some students are even more reluctant to participate in interaction in online classes, due to the absence of the Internet, some students who are usually silent in the classroom can participate in classroom interaction more actively after switching to the Internet platform, which is also a pleasant surprise in online teaching.

In the process of online teaching, parents’ participation in their children’s education has increased significantly. Due to the absence of teachers, parents assume the role of supervision and management of their children, which gives many parents who are usually busy with their work and less involved in their children’s studies an opportunity to get to know their children better. In the process of supervising and tutoring children’s homework, the interaction between parents and children has also increased significantly, which is helpful to improve family relations (of course, when the academic performance is not good, it will also have the opposite effect).

The popularity of online courses has also greatly enriched Internet educational resources. In the past, some teaching resources that were difficult to retrieve on the Internet can now be easily found on various platforms, which will help reduce the cost of education and give everyone a more equal opportunity to obtain educational resources. Some things that you used to have to take remedial classes can now be found on the Internet. At the same time, the online teaching resources have realized "paperless" teaching and learning, which is conducive to saving resources and protecting the environment.

More importantly, the popularity of online courses is a new opportunity for friends who are interested in lifelong learning and improve themselves through self-study. For example, on Coursera, you can hear courses from top universities in the world, such as Harvard University and University of California, Berkeley, and most of them are provided free of charge. If your English is not very good, there are many Chinese Coursera courses for you to choose from in Netease open class. The bridge of the internet allows many people who have no chance to study abroad to dream of famous schools. The popularity of online courses is a great boon for lifelong learners.

To sum up, although online education has encountered some difficulties and challenges in the initial stage of application, it is very valuable in the long run. Online teaching not only promotes the innovation of teaching technology, but also greatly enriches educational resources; It greatly reduces the cost of receiving education, is conducive to the popularization and sinking of knowledge, and improves the overall quality of the people. Therefore, in the future, as educators, we should pay more attention to the value of online education and focus on solving the problems found in the teaching process, so that online education can benefit a wider group.

References:

Pokhrel, S., & Chhetri, R. (2021). A literature review on impact of COVID-19 pandemic on teaching and learning. Higher education for the future, 8(1), 133-141.

Zhang Huirong, Zhu Yuqiong, Nianchuang, & Xiong Zhangxiao. (2020). Online teaching in primary and secondary schools under major epidemic: opportunities, challenges and countermeasures. Curriculum. Teaching methods, 40(5), 58-63.

Tang Xueping,&Li Chen. (2021). Analysis of public awareness of online teaching in primary and secondary schools during the COVID-19 epidemic. Distance education in China.

Zhang Binglin, Fu Rui,&Li Dingding. (2020). Rational Thinking on Webcast Teaching in Post-epidemic Period. Curriculum. Textbook. Teaching Method, 40(6), 73-80.

Original title: "Do you miss the online class for three years? 》

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On November 19th, the General Command of Epidemic Prevention and Control in COVID-19, Dalian released that from 00: 00 to 24: 00 on November 18th, seven new confirmed cases of local COVID-19 were found in Dalian, all of which were found through active investigation by close contacts and key people.

The main activity tracks of confirmed cases are announced as follows:

Confirmed case 281: an employee of a company in Ganjingzi District, living in Vanke City Community, Xiangquan Community, Advanced Street, Jinpu New District. November 7th — On the 15th, the nucleic acid test was negative for four times; On November 18th, the nucleic acid test was positive in the active investigation of the key population, and then it was transferred to COVID-19 for centralized treatment and isolated treatment in Dalian Center. After consultation by the provincial expert group, it was confirmed as an ordinary case.

On November 12th, I went to Dashang Supermarket (Jinzhou Democratic Plaza Store) at noon and to Qingxiang Lamian Noodles (Jinwan Road Store) in the afternoon.

On November 13th, I went to Jiajiafu Supermarket (Wuyi Road Store) in the morning and to Pangjie Steamed Bun Shop (Stalin Road Store) in the afternoon.

On November 14th, I went to Pangjie Steamed Bun Shop (Stalin Road Branch) in the morning.

From November 12th to 14th, I delivered meals to the First People’s Hospital of Jinzhou District every day.

On November 15th, in the morning, I went to Pangjie Baozipu (Stalin Road Store), Xiangquan Street Mother’s Home, an advanced street in Jinpu New District, and Jiajiafu Supermarket (Wuyi Road Store).

On November 16th, in the morning, I went to Jinzhou First People’s Hospital, Parent-child Le Maternal and Infant Life House (Vanke City), Jiajiafu Supermarket (Wuyi Road Store) and Neptune Star Health Pharmacy (Bohai Street Store).

On November 17th, in the morning, I went to Pangjie Baozipu (Jinfang Store), Jiangji Smoked Sauce Dumpling House (Advanced Street) and Fujiale Fruit Supermarket (Vanke Store).

Confirmed case 282: unemployed, living in Wankecheng Community, Xiangquan Community, Advanced Street, Jinpu New District, and the wife of confirmed case 281. November 7th — On the 15 th, the nucleic acid test was negative three times; On November 18th, the close contacts tested positive for nucleic acid during the active investigation, and then they were transferred to COVID-19 for centralized treatment and isolated treatment in Dalian Center. After consultation by the provincial expert group, they were diagnosed as ordinary cases.

November 12-November 15, at the First People’s Hospital of Jinzhou District.

From November 16th to November 17th, I stayed at home.

Confirmed case 283: the son of confirmed case 282, who lives in Vanke City Community, Xiangquan Community, Advanced Street, Jinpu New District. On November 18th, the close contacts tested positive for nucleic acid in the active investigation, and then they were transferred to COVID-19 for centralized treatment and isolated treatment in Dalian Center, and the case was confirmed by the provincial expert group consultation (light).

From November 12 to November 17, the trajectory was the same as that of confirmed case 282.

Confirmed case 284: unemployed, living at No.10 Xiangquan Street, Xiangquan Community, Advanced Street, Jinpu New District, and the mother of confirmed case 281. From November 7 to 17, the nucleic acid test was negative for four times; On November 18th, the close contacts tested positive for nucleic acid in the active investigation, and then they were transferred to COVID-19 for centralized treatment and isolated treatment in Dalian Center, and the case was confirmed by the provincial expert group consultation (light).

From November 12th to November 13th, I stayed at home.

From November 14th to November 17th, I sampled nucleic acid in the community and went to my son’s house in Wankecheng Community, an advanced street in Jinpu New District.

Confirmed case 285: domestic worker, living at No.358 Nanmian Community, Zhanqian Street, Jinpu New District. From November 5 to 17, nucleic acid tests were negative for three times; On November 18th, the close contacts of 281 confirmed cases tested positive for nucleic acid, and then they were transferred to COVID-19 for centralized treatment and isolated treatment in Dalian Center. After consultation by the provincial expert group, they were diagnosed as ordinary cases.

From November 12th to November 16th, the trajectory was the same as that of the confirmed case 282 (accompanying).

On November 17th, in the afternoon, I sampled the nucleic acid in Nanmian Community and bought it in Wan Jiale (Nanmian Road Store).

Confirmed case 286: employee of a company in Ganjingzi District, living in P1 District of Quanshui Street in Ganjingzi District. From November 8 to 17, the nucleic acid test was negative for 8 times; On November 14th, as a close contact, he was transferred to a centralized isolation place. On November 18th, the routine nucleic acid test result was positive, and then he was transferred to COVID-19 for centralized treatment and isolation treatment in Dalian Center. After consultation by the provincial expert group, he was diagnosed as an ordinary case.

From November 12th to 13th, I stayed at home.

Confirmed case 287: a child, living in the family building of the Finance Bureau of Chengguan Street, zhuanghe city. From November 4 to 14, nucleic acid tests were negative for 8 times; On November 14th, as a close contact, he was transferred to a centralized isolation place. On November 18th, the routine nucleic acid test results were positive, and then he was transferred to COVID-19 for centralized treatment and isolation treatment in Dalian Center. After consultation by the provincial expert group, the case was confirmed (light).

From November 12th to November 14th, I stayed at home.

　　CCTV News:This year’s "Government Work Report" pointed out that it is necessary to promote the steady growth of consumption, and take measures to increase the income of urban and rural residents and enhance their spending power.

　　In 2018, the total retail sales of consumer goods in China exceeded 38 trillion, and consumption became the "main engine" of economic growth for five consecutive years; In 2019, we will promote the formation of a strong domestic market, continuously release the potential of domestic demand, make up for shortcomings in services, and adapt to new demands. Consumption upgrades, where does the money go? Where can consumption tap the potential?

　　News link:

　　According to the preliminary accounting data of the National Bureau of Statistics, China’s GDP in 2018 was 90.03 trillion yuan, an increase of 6.6% over the previous year. The contribution rate of final consumption expenditure to GDP growth in the whole year was 76.2%, an increase of 18.6 percentage points over the previous year.

　　Where does the consumption upgrade money go?

　　Yang Chengzhang: Information, health, culture and tourism are the new consumption trends.

　　Yang Chengzhang, member of Chinese People’s Political Consultative Conference: The proportion of digital consumption and information consumption is increasing, and a large amount of consumption is obtained through digital information. Healthy consumption and cultural consumption are also a trend of high-quality consumption. For example, it can be seen from a family of four generations that each level has its own consumption hotspots and consumption patterns, especially the elderly and children, who were relatively disadvantaged groups in consumption, but now these two groups are precisely places with great potential. On the whole, China’s consumption potential is still very large. The problem is how to release the potential, become the current consumption hotspot, and drive consumer demand, which is very important for our current economic growth.

　　Crown: Engel coefficient innovation is low, "good life" becomes mainstream

　　Wang Guan, financial commentator of Yangguang: Engel coefficient refers to the percentage of money spent by a person or a family on food, which accounts for the income of the whole family. In 1978, China’s Engel coefficient was 58%, and about 60% of Chinese’s money was spent on food. Last year, our Engel coefficient dropped to 28.4%, which is a very great achievement. Today, Chinese spends less than 30% on food.

　　So where did the money go? It is understood that in 2018, the box office of Chinese movies reached about 60 billion yuan, while domestic tourism reached 5.5 billion, and outbound travel was close to 150 million. In other words, people have turned to cultural consumption, from traditional dietary consumption to more consumption that meets people’s needs for a better life.

　　Where does the potential of consumption go?

　　News link:

　　According to the Ministry of Commerce, there are three major measures to promote consumption this year: First, promote urban consumption and promote consumption upgrading, including upgrading a number of pedestrian streets and optimizing the layout of convenience stores; The second is to expand rural consumption and promote agricultural products to enter the city and industrial products to the countryside; The third is to develop service consumption, optimize service supply, and focus on filling shortcomings such as old-age care services and domestic services.

　　Yang Chengzhang: The consumption concept should be innovated when changing the consumption pattern.

　　Yang Chengzhang, member of Chinese People’s Political Consultative Conference: The consumption concepts of different income groups are in the process of collision between the old and the new. For example, older people may not understand the moonlight clan born in 1980s and 1990s, because the traditional culture of China advocates frugality and housekeeping, so they should save money to live, not borrow money. But saving money to live is a way, and borrowing money to live is also a way. Saving money is to use the value created now in the future, and borrowing money to live is to have confidence in the future, so everyone’s consumption concept is changing, and there is still a lot of room for improvement here.

　　In addition, consumption patterns should be constantly innovated. For example, a house should not only be large, but also comfortable. In some developed countries, although the house area is not large, the decoration is particularly particular. Therefore, we should follow the house to explore consumption, follow the car to explore consumption, follow the mobile phone to explore consumption, follow the high-speed rail to explore consumption and fully tap the consumption potential.

　　Crown: Driving High-quality Employment by Consumption Upgrading Dongfeng

　　Wang Guan, commentator of Yangguang Finance and Economics: It is very important to promote consumption in order to stabilize growth. Steady growth is actually to stabilize employment, and employment is the biggest livelihood.

　　With stable employment and increased income, we will have confidence. We should take advantage of the east wind of consumption upgrading to promote high-quality employment. For example: B&B renovation. In some rural areas of Shandong and Zhejiang, the rebuilt homestay is even more expensive than a five-star hotel, and it brings a series of production work, such as water and electricity heating, pipeline design and construction of the whole appearance, and so on.

　　In addition, how to develop and use the network online and how to publicize it have brought more detailed work needs, so with the consumption upgrading, the whole employment will be upgraded.

　　Yang Chengzhang: Consumption is the stabilizer of economic growth.

　　Yang Chengzhang, member of Chinese People’s Political Consultative Conference: Consumption is the stabilizer of current economic growth, because the contribution rate of consumption reaches 78%. At present, GDP growth in the world is on the decline, and it is still difficult for our external demand to increase substantially. What does China rely on under such circumstances? It depends on consumption. When consumption stabilizes, the economy will naturally stabilize. This year, the government’s series of policies focus on two points: one is consumption, and the other is private enterprises. The consumption potential is the greatest, because the population of 1.4 billion is the largest market.

　　Crown: Seize the strategic opportunity period of consumption upgrading to promote the high-quality development of China economy.

　　Wang Guan, financial commentator of Yangguang: Seize the strategic opportunity period of consumption upgrading and promote the high-quality economic development of China. In the past 40 years of reform and opening up, we have enjoyed huge dividends, and the domestic demand is unprecedented. Not only China, but also the whole world is very optimistic about this strong consumer demand, so our supply-side structural reform should keep up with this rhythm.

　　Today, consumers in China have changed from buying cheap and affordable products to buying quality and brands. Under such circumstances, how can China’s economy reach a new level? We bid farewell to the shortage economy in the past and entered the quality economy today. To realize the high-quality development of China’s economy, we need a series of supporting measures. This issue deserves our long-term consideration.

The series really kept everyone waiting for too long. This flagship new machine finally met us in November. Starting from the flagship of the previous generation of vivo X series, vivo put forward the product concept of eliminating small cups. The newly released X100 series is still a full-scale mug, and there are only two models: the large X100 and the oversized X100 Pro. Next, let me show you the highlights of X100 series and decide whether to buy it after reading it.

In terms of design, X100 and X100 Pro are inspired by the sun and the moon respectively. X100 adopts a brand-new moon ring cloud step design, and the right side of the lens module is specially treated, which is the same as the crescent moon. This crescent moon is made of aviation grade stainless steel, which can not only protect the lens, but also has the characteristics of wear resistance and paint retention.

X100 Pro is a solar ring cloud design based on the sun, which is inspired by the shining brilliance of the solar ring, and the position and color of the corresponding camera module have also changed. At the same time, X100 series is also very fine in polishing details. Not only is the lens equipped with a 2.5D gem lens, but the module also adopts the sun pattern technology of the same model of Rolex watch, which looks very advanced.

In terms of color matching, X100 is the same in all departments, with four colors, namely Sunset Orange, Bai Yueguang, Star Blue and Chenye Black. Among them, Sunset Orange is made of plain leather, which has the advantages of comfortable feel and not easy to be contaminated with fingerprints, and it is a perfect match with X100 Pro’s solar ring cloud step design.

X100 series’ moon ring cloud order is more suitable for Bai Yueguang and interstellar blue color matching. Among them, Bai Yueguang is made of glossy glass, while Star Blue is made of star-track micro-nano lithography technology, which looks like a galaxy flashing and has a very high value. The black color matching is an AG matte process, which is very suitable with both designs, and the overall appearance is low-key and restrained.

In terms of core performance, vivo X100 series is the first flagship processor Tianji 9300 released by MediaTek. This chip adopts a full-core design, and the CPU part is composed of four Cortex-X4 supercomputers and four Cortex-A720 supercomputers, with no small cores. Among them, the highest frequency of super-large core can reach 3.25GHz, and its performance can be said to be very powerful.

In terms of GPU, Tianqi 9300 has a built-in 12-core Immortalis-G720 graphics processor, which can bring about an overall improvement in performance and energy efficiency. X100 series models equipped with Titianji 9300 chip also brought the launch of the seventh generation AI processor APU790 and the second generation ray tracing engine.

It is worth mentioning that the flagship processor of Tianji 9300 was jointly developed by vivo and MediaTek, and the performance, AI, image and battery life of the processor were jointly optimized by the two policies, bringing users a more reliable and smooth computer experience.

The performance of Tianji 9300 didn’t disappoint us either, and it formed a three-legged situation with the previously released A17 Pro and the third-generation Snapdragon 8. I believe that in the future, Tianji 9300 will have more room to play, and more and more flagship machine will choose Tianji processor.

Image performance is the strength and killer of vivo X series. This time, vivo X100 brought a 50-megapixel super-sensitive VCS bionic main camera, a 64-megapixel Zeiss super telephoto lens and a 50-megapixel super wide-angle lens, and also equipped with a dToF laser focusing sensor and a self-developed image chip V2.

X100 Pro’s imaging ability is stronger. The main camera is IMX989 true one-inch sensor, supplemented by 50-megapixel Zeiss super telephoto lens and 50-megapixel super wide-angle lens. It is also equipped with dToF laser focusing sensor. It can be said that X100 Pro’s hardware crushed friends in the flagship mobile phone with new processor at the end of this year.

That’s not all. X100 Pro has also brought us a brand-new self-developed video chip V3. This chip adopts 6nm process, and its energy efficiency is increased by 30% compared with the previous generation. It supports 4K movie-level portrait video, and at the same time, it can optimize the game, and the frame rate can be inserted to 120 frames, which can be said to be very comprehensive.

At the level, vivo continues to cooperate deeply with Zeiss. X100 is equipped with B-Speed blur, a new member of Zeiss lens protection, and also supports five portrait environment points. With Zeiss style and color, X100 continues to consolidate the leading position of mobile portrait photography. Finally, three kinds of personalized watermark photo frames are added in X100, which can be added according to your own preferences.

In terms of system, vivo X100 will be equipped with the newly released OriginOS4. The new system will continue to upgrade the appearance of the system, giving users a higher degree of freedom, and the system settings will be updated with brand-new color icons, which will make the display clearer, the font look more comfortable, and the overall system will look more beautiful and practical.

Of course, the key upgrade of OriginOS4 is the big blue heart model. The brand-new blue heart model has three core functions, namely, a large text model built for end testing, a dialogue function developed for natural dialogue, and the ability to cope with extreme scenes.

After calling Blue Heart V, you can ask it to help you write a copy, a weekly report, and also help you summarize the key points of an article or paper. You can be a good hand in writing. He can also help you find files or photos in your mobile phone quickly, just like your intimate electronic secretary, and even he can keep chatting and solve your boring time.

Generative AI is a very hot topic this year. I believe that everyone has heard or used the ability of AI to improve the efficiency of daily work and life. The convenience provided by Blue Heart V can involve all aspects of life. I believe you will like it if you use it.

In terms of other configurations, the vivo X100 series is also generous. Stereo double lift, full scene NFC, X-axis linear motor, infrared remote control and IP68 protection are all standard. Pro version is more hard-core configuration such as universal signal amplification system, independent -Fi chip, 3-microphone and 6-channel radio system.

In terms of endurance, the vivo X100 has a built-in 5000mAh blue ocean battery, which increases the energy density by 8.3% compared with the previous generation and supports 120W dual-core flash charging. It has a built-in 5400mAh blue ocean battery, which supports 100W dual-core flash charging and 50W wireless charging. The X100 weighs about 202g, while the X100 Pro with better configuration is 221g.

So, how to choose X100 and X100 Pro? First of all, the configurations of these two mobile phones are quite high. I think that professional players who require high price for taking photos can go to X100 Pro, because they have stronger image performance and battery life, and are more hardcore. X100 can meet all the needs of taking photos in our daily life, and is suitable for friends who are looking for cost performance and thinness.

At present, vivo X100 series mobile phones have been put on the platform of JD.COM, and now you can enjoy multiple preferential gifts when you participate in pre-order activities. Interested friends can click on the link below the article to learn more and participate in the activities.