I used to have a book of this type, but I lost it as soon as I finished the exam, because I personally didn't like this style.

I am line drawing, and it feels very simple.

The exam is more suitable for the combination of line and surface, and the picture has a strong impact.

I have painted this style, but I can't draw it well.

I prefer those that can highlight the structure or dynamics of the characters.

If line drawing is more suitable for pens or signature pens, but it can't be changed if it is wrong, so it is feasible to have certain skills.

There is also light and shadow, which I personally prefer. But this is not easy to control.

Yu Ping has a good grasp of the dynamics of sketch, which is more suitable for candidates to copy.

As for this style of books, I really can't remember.