PS: you may be scolding the minor reform. I'm sorry why there are so few updates these days. The new book needs to be coded as well as the old one. In addition, the minor reform in the previous days was very busy, and there was no time to code at all. Now I'm a little bit free, I've squeezed out some time, and I'm desperately coding. The new book said that it would take time to upload 30000 words at once. It takes time to update the old book, and it also takes time. So I can only hope that you can understand. The new book will be uploaded...