1. The Book of Changes is an ancient classic about the changes of everything in the world and a profound work of dialectical philosophy. Including Lianshan, Guicang and Zhouyi.
2. Among them, Lianshan and Guicang have been lost, and only Zhouyi remains in the world.
3. The Book of Changes, known as the source of all classics, is the general outline of Chinese traditional culture, contains simple and profound natural laws and harmonious dialectical thoughts, and is the crystallization of the wisdom of the Chinese nation for five thousand years.