In 2020, the outbreak of the coronavirus had deeply changed this world. Due to the rapid spread of the Covid-19,people have to be isolated at home. For students, the inability to return to school because of the epidemic has forced their studies to be transferred from offline classrooms to online classrooms. At the same time,video conferencing software based on DingTalk and Tencent Meeting has become the main stream choice for teachers. Even if these two products are from the top two companies in China, Alibaba and Tencent, the two have the top Cloud Computing1 technology. However, when teachers play videos, there are obvious delays and stalls. Does this mean that online education is not feasible? Although offline education is better than Online education in experience, But Online education still has advantages that offline education cannot match.

JINMING Zhang. The Future of Online Learning. Frontiers in Educational Research (2020) Vol. 3 Issue 14: 28-34. https://doi.org/10.25236/FER.2020.031406.

[1] Cloud Computing is the ability to access a pool of computing resources owned and maintained by a third party via the Internet.
[2] Rachna Arora, Anshu Parashar / International Journal of Engineering Research and Applications (IJERA) ISSN: 2248-9622 http://www.ijera.com/ Vol. 3, Issue 4, Jul-Aug 2013, 1922 | P a g e Secure User Data in Cloud Computing Using Encryption Algorithms, pp.1922-1926
[3] With 2.3 billion users, Facebook is the most popular social media platform today. YouTube, Instagram and WeChat follow, with more than a billion users. Tumblr and TikTok come next, with over half a billion users. Esteban Ortiz-Ospina (September 18, 2019) The Rise Of Social Media Our World in Data https://ourworldindata.org/rise-of-social-media#:~:text=With%202.3%20billion%20users%2C%20Facebook,more%20than%20a%20billion%20users.