What kind of ideological expression is the philosophy of Zhouyi?

Zhouyi is an ancient philosophical work of China, which demonstrates and describes the operating law of things based on the dualism of Yin and Yang.

Yi is the Tao, the eternal truth. Even if things change at any time, the eternal Tao will not change. Biography of Cohesion: "Life is easy". Endless, just like "the meaning of life is to create a life that the universe continues", it is new and new to experience the beauty of life. ) In the record of "Taibu" in Zhou Li, there are also "three meanings"; Sanyi refers to the divination books of three different dynasties: Lianshan, Guizang and Zhouyi. It is said that Lianshan is the Oracle of Xia Dynasty, Guizang is the Oracle of Yin Shang Dynasty, and Zhouyi is the Oracle of Zhou Dynasty. The Book of Changes itself is not a Taoist book. Taoism originated from the organization of peasant rebels. In the Spring and Autumn Period and the Warring States Period, in order to secretly spread Laozi, ancient books such as the Book of Changes were used as classics, but the Book of Changes was thousands of years different from Laozi. Zheng Xuan's Book of Changes in the Eastern Han Dynasty holds that "Yi Yi has three meanings: Jane Yi; Change two also; It is not easy to do three. " This sentence summarizes the three meanings of Yi: simplicity, change and constancy. That is to say, the existence of things in the universe is 1) It is natural and shows two properties: easy and simple; 2) Always changing; 3) remain unchanged. As the Book of Songs said, "the moon meets the sun" or "the moon rises at a constant speed", the movement of the sun and the moon shows an artificial nature and is simple. Its position and shape change from time to time and are changeable; However, it is always "not easy" for the East to go out and the West to fall.