What is the purpose of Confucius' compilation of Yi Zhuan?

Confucius is the founder of China's Confucianism. He left many classic languages for later generations, which are worth learning. Among them, Yi Zhuan, written by him, was also of great academic significance at that time. Then what is the purpose of compiling Yi Zhuan? I think nothing more than the following points:

Confucius traveled around the world when he was young and had rich experience. After fourteen years' travel, he finally returned to Shandong. I am depressed and my career can't go on. What should I do? I am over 60 years old, so I will make a book and write it down. At least I can live up to my travel and study over the years. So I study the Book of Changes and write down the interpretation of the Book of Changes according to my own research, that is, the Book of Changes.

Second, explain its profound meaning. At that time, the Book of Changes was mostly used for divination. However, after studying the Book of Changes carefully, Confucius thought that the Book of Changes was actually rich in connotation. He found that the Book of Changes can not only be used for divination, but also play an important role in understanding the social and socio-political views of the universe. Through Confucius' compilation of Yi Zhuan, the function of divination is weakened, and more scientific principles are used to express boring and mysterious symbols through gossip, which makes people easier to understand.

Thirdly, through the understanding of the Book of Changes, the quartet handed down from generation to generation compiled the Book of Changes, which made everyone have more understanding of the Book of Changes. Since there are many profound meanings, Confucius has explained the meaning, and the rest is more used. It is found that through the Book of Changes, the Book of Changes is well understood and used. And after continuous use, let everyone find that, well, the Book of Changes is very effective. With more and more applications, The Book of Changes and The Book of Changes are also widely circulated and become more and more famous.

The purpose of Confucius' compilation of Yi Zhuan may be suspected of depression at first, but I think that a learned person, a talented person like Confucius, must have the best purpose in the end, so that more people can learn and use knowledge to serve the society.