Wonder Books Provider

For some obscure reason, Yang Chen becomes a knowledge disseminator.
His duty is to make books about knowledge and skills and let people learn these books.
As a reward, he can get the abilities people have learned from the books.
From martial arts in kung fu novels, to mysterious arts in the fantasy world, and even to black technology in the future world, everything can be made into books by Yang Chen.
With the help of these books, he has successfully changed from a street stallholder into a wonder books magnate.