This article is an original story in the skin of a fan. The basics of tutoring are soy sauce. Internet king is the main battlefield, but don't expect me to write how to play tennis. The plot is all based on clouds and research. Don't join the party.
There are two prequels to this article, but the author has not written them.
There may be some people who don't understand it, but the author will try his best to make it clearer.