When did the Book of Changes come into being? Who is the author?

The Book of Changes is divided into three parts: Lianshan in Xia Dynasty and Tibet in Shang Dynasty. Zhouyi, the Book of Changes of the Zhou Dynasty (once written in Xia, Shang and Zhou Dynasties, once written in ancient times), is also called Sanyi. Among them, Lianshan and Guizang have been lost, and only Zhouyi has been handed down from generation to generation. Now the Book of Changes is generally called the Book of Changes. There are three saints in the ancient Book of Changes. Draw the basic eight diagrams first, and then superimpose them into the fu of sixty-four hexagrams (called Bao Jia in Cohesive Biography). When he arrived in Jichang (later known as Zhou Wenwang), he was imprisoned by Shang Zhouwang for seven years, where he wrote his predictions and remarks. Some scholars believe that the author of this part includes Zhou Wenwang's son, Duke Zhou, or a fortune teller in the late Western Zhou Dynasty.

Confucius said, "Add me a few years old, and I will learn the Book of Changes at the age of 50, so it won't matter." Confucius' contribution to the Book of Changes is that he began to write the Book of Changes. This part of the work should be completed with the cooperation of future generations. Yi Chuan is also called "Ten Wings", just like ten auxiliary explanations.

Since the Han Dynasty, people who study the Book of Changes have read it together with the classics, so today's so-called Book of Changes includes the Book of Changes. There is also the word "easy to learn", which is all-encompassing. It is the result that scholars have applied the Book of Changes to astronomy, geography, medicine, art of war, health care and other fields since the Han Dynasty. As for the part related to divination, it is more colorful.