Matters needing attention: 1. Newcomer's work. 2. This book is written only because I want to write it. I accept all criticisms, but please do not publish any insulting words. If you think it is okay, I am very happy to comment. If not You can directly X drop. 3, it may be a bit like Zongman. Suddenly I feel that the QQ group has become colder. Please come in to enliven the atmosphere and interact with readers. Group number: 11214774