What's the difference between Zhouyi and Yijing? In Chinese history, it is often said that divination and geomantic omen are all used in that book?

Zhou Zhe and Zhou Ren also; Easy, easy, simple, not easy, Zhou people's "easy" is also. Zhouyi is the first of the group classics. Ancient divination books and their explanations were later included in Confucian classics. Zhouyi includes two parts: classics and biography. The Book of Changes, sometimes called the Book of Changes or Ancient Books, was gradually formed by witch historians specializing in divination on the basis of long-term experience and records. Biography, also known as Yi Zhuan, is the interpretation of Jing by people during the Warring States Period. The Book of Changes is divided into sixty-four hexagrams, and The Book of Changes is divided into seven kinds and ten articles, which are called "Ten Wings" by scholars in the Han Dynasty, and "Wings" are the Aileron Sutra.

Ancient books, such as Xialianshan, Returning to Tibet in Shang Dynasty and Zhouyi.

The Book of Changes is the source of China's philosophical thought, which laid some basic categories of China's philosophy, such as "Yin and Yang", and had a great influence on China people. Up to now, I have learned a lot from Hongru, and I have been poor. Down to the street soothsayers, reading for a living is regarded as the standard, and it is the most profound and mysterious of the thirteen classics. Therefore, as China people, we have to read Zhouyi!