I can write a book for you after writing it in detail. How to use it is a big problem, such as integrals and theorems in mathematics. I can tell you right away, I have no idea what this is, and it will take a long time to figure it out.

Cct is an early Chinese support method, and now it is basically eliminated. Don't use it again. Simple modifications can be used.

I don't understand how to operate here. Can join the group: 9 1940767