Why can eight characters or four pillars dominate people's destiny?

People's date of birth, because expressed by four pairs of symbols, is exactly eight words, so it is called eight characters or four pillars in the field of fate prediction. There is a saying that the "birth time" represented by the symbol of stem and branch is not a simple concept of time, but a functional expression that belongs to the basic substance of qi and blood that constitutes the human body and can keep pace with the times in the contradictory movement of heredity and variation. That is to say, life develops from low to high. Although the contradictory movement of heredity and variation (internal cause) is the decisive factor, life can only survive and develop in a suitable environment. Therefore, under the natural selection of survival of the fittest and elimination of inappropriateness (external cause), the development of life will be forced to develop in the only direction that is compatible with the natural environment. It is through countless generations of such alternating development that a functional existence state that constitutes the basic substance of human qi and blood and is synchronized with time is finally formed. To discuss this problem clearly is the core content of Liu Yuzhen's next textbook, The Mechanism and Principle of the Formation of Human Biological Rhythm. Therefore, it is absolutely wrong to use the symbol of stem and branch to represent the joint point "zero pole" of every specific life from "cathode" (referring to the process of pregnancy in the mother) to "anode" (referring to the whole survival time of the fetus after birth). Although it is based on the time of birth, if it is regarded as a simple concept of time, it is a manifestation of ignorance of the formation mechanism of human destiny.