The Book of Changes was one of the classics of ancient Chinese philosophy. It was an ancient work on the philosophy of life, natural philosophy, divination, and moral concepts. It mainly includes 64 hexagrams, line statements and image statements. Each hexagram represents a natural phenomenon and a state of life. The line statements and image statements are used to explain and guide this natural phenomenon and state of life. The core idea of the Book of Changes was "change". It believed that everything in the world was constantly changing, and this change had a certain law and order. By studying this law and order, people could predict and respond to changes and better adapt to the social environment. In addition to divination and philosophy, the Book of Changes also involved some moral concepts and life philosophy such as "virtue","modesty","justice" and so on. The Book of Changes was regarded as an important part of ancient Chinese philosophy and had a profound influence on Chinese culture, philosophy, literature and history.