The Book of Changes includes three parts.

The Book of Changes is highly regarded by Confucianism as the first of the Five Classics, the Book of Songs represents literature, the Book of History represents history, the Book of Rites represents life norms, the Book of Rites represents art, and the Book of Changes represents philosophy. As the representative of philosophy, or the root of China's philosophy, I Ching includes three parts: I Ching, I Ching and I Ching.

The Book of Changes itself is very few, only 64 divinatory symbols, plus divinatory symbols and words, you can read up to 20 pages. Because the content is too simple and difficult to understand, there is Yi Zhuan.

The Book of Changes was compiled by Confucius and his descendants. There are ten parts, called "Ten Wings". Wings are auxiliary, just like wings.

1 The first part of Eight Tuan Biography, the second part of Eight Tuan Biography, interpretation of hexagrams;

The Biography of the Elephant usually has only one sentence to explain the meaning of hexagrams. 4 "Little Elephant Biography", usually based on "Little Elephant Biography";

5 "Cohesion upward" and 6 "Cohesion downward" are independent philosophical discourses;

7 The Biography of Classical Chinese explains some words, but only the two hexagrams of Gan Kun are specially explained, because these two hexagrams are too important;

Biography of Eight Diagrams explains why each hexagram appears, why it is named, and what the eight diagrams symbolize, like a small dictionary.

9 "Biography of Preface Gua", explaining the reasons for the arrangement order of sixty-four hexagrams;

10 miscellaneous hexagrams are spread in no order, so 64 hexagrams are mixed together. Many people think that its content has no special reason and is not a great work.

"Yi-ology" has developed all the way since the Han Dynasty, and scholars have studied it alone, with numerous schools.

The introduction of the Book of Changes should focus on "Jing" and "Chuan", and clarify the Book of Changes and the truth of life. Its big principle is one sentence; "Watching the sky represents human nature." "Heaven" represents the rules of the universe and nature, and "man" is the truth of how the human world should survive. The main purpose of the Book of Changes is to observe how people should arrange their behavior according to the changes in nature in the process of time, with the aim of "seeking good fortune and avoiding evil".