Well, I wanted to write a testimonial on the shelves in the evening, but my friends asked me to post it, so I wrote it.

In fact, this book is the first book I really insisted on writing, although I decided to write it at the beginning, and there was no outline or anything, and I bumped and bumped along the way, and it was actually put on the shelves.

Of course, it can be put on the shelves because of the support of friends, thank you in advance.

Finally, of course, it's asking for subscription.,Because the author of this book is lazy and has advanced cancer.,It's definitely not going to cost you much money in a month.,So you're interested in supporting me.,Please subscribe.。

Finally, thank you.