Who is the mainstream school of fortune telling?

The mainstream school of fortune telling

No matter which school, it has its own theoretical system. Any prediction theory can not be separated from the Yin and Yang, Yin and Yang, the five elements and restraint, the judgment of the strength of the branches and the theory of one faction in the Book of Changes. The technicians in any school are used to be accurate, and what conforms to the law is the truth. In Master Meng's question and answer to readers all over the country, there are some introductions, but they are too professional.