As I said before, Chapter 42 of Tao Te Ching is a study of the origin of space. Taoism has no actual description of how the "source" came into being, but only talks about the way of transformation, rarely mentioning the real reason. Some people think that Taoism is imperfect, but I don't think so, because until now no one has made a credible statement about the source of this world. Thousands of years ago, Taoism had this philosophical and abstract definition, which is a very outstanding thing.
Looking closely at the Book of Changes, it is true that "Tai Chi gives birth to two instruments", which really explains too much. Tai Chi gives birth to two instruments, two instruments give birth to four images, and four images give birth to gossip. Do you masters of divination feel that this sentence seems to be a formula? By the way, this originally refers to the yarrow divination described in Cohesion, that is to say, the famous Dayan Method is a method to study the space and the source of divination, and the meanings of the two are different.
This divination method in the Book of Changes is related to the origin of everything in the Tao Te Ching, and the relationship in this period should be indispensable to the enrichment and development trend of hundred schools of thought, such as a group of Yi-ology scholars and Taoist personnel. This is an extremely difficult time process. The Book of Changes can be traced back to the Xia Dynasty. Although the age and the real creator of Tao Te Ching have long been difficult to verify, they were all true in the Warring States period at the latest. Obviously, it took thousands of years for these two books to appear before us. So there are many unknowns, outflows and fragments.