I want to know where there are real Maoshan Shushu books.

If you really want to learn, I suggest going to the temple to find those masters. You can't learn anything from the number of Maoshan skills circulating on the Internet. It was probably written by Miao Chuan. Moreover, China's conservative skills pay attention to words and deeds, and he will not put his efforts into the book. So there must be teachers to learn, even authentic books are difficult to learn.