The first time I wrote a book, I didn't know a lot of things, although I had been reading books for more than ten years, I never had the courage to put pen to paper, and now I write it, sometimes I don't know what to do.

Regardless of the others, thank you very much for the help of the responsible editor Ash, thank you very much for the help of the contracted editor Manman, thank you very much for the help of the art team, and even more thank you to all the book friends who have supported me from the beginning, and the fat man will try his best to write this book.