Donglin is a lazy person, but for this book, Donglin is really trying his best, this is Donglin's second book.

There's a lot I want to say, but I can't say it when it comes to it, so let's see!

Donglin will definitely work hard, I hope you can like it, if there is any mistake, or everyone is not satisfied, please correct more, as long as everyone's opinions, in order to make Donglin's book better and better.

Thank you!