Save money: The perspective is very complicated, similar to a unit essay, so don't read it with your brain.
①The first few chapters were written more than 20 years ago when my skills were not very mature (although I am not very mature now), please forgive me for looking awkward＞＜. ②This book is written to improve the OC worldview. I may write several more OC-related books in the future. The slowest one should be weekly updates. I don't have the ability to update them daily＞＜③This is a very industrial saccharine book...
[I won't write the introduction for now. The introduction I wrote before is too embarrassing. Why don't you wait until I finish writing it before adding it!
Purpose: companionship and growth
