Moreover, the Book of Changes is something that can only be expressed in words, so many "images" and "forks" in the Book of Changes are just appearances, and the deeper connotation behind the appearances depends on you to dig. There are many people writing Yi outside now, but they still feel a little shallow. There is a book called Authentic Zhouyi, which is well written, but only gives you a way of thinking. How to understand and to what extent, it still takes time and life experience. This thing can never be understood overnight.