What introductory book should I read?

On the first floor, I suggested that nan huaijin did a good job. I should have learned the Book of Changes from The Book of Changes, and then I recommended a book, The Book of Changes, which was also written by nan huaijin. It's about the Book of Changes. In contrast, it is very rewarding. He is the kind of person who practices meditation, unlike others, and Ceng Shiqiang is also very good. He is a professor in Taiwan Province Province. The above is an introduction, if you want to use it for divination.