Afaik, the book is largely fiction, inspired by Wang's life story.
Wang didn't write the book. Some random guy did, and then presented it to Wang for approval, and Wang gave it.
I'm a woo person myself, I've just read too much over too long to know that a lot of these things are real, but that said, if you actually read the book in its original language, you'd realize that it's written in a fiction style.
That's not to say Wang isn't good. He could be super good for all I know, but that book is not it.