The method lies in yin and yang, in tricks.

"The law is based on yin and yang, and the magic number is the most famous sentence in Huangdi Neijing, which means" Yin and yang are the rules, and the magic number is the sum ".

"Yin and Yang" here refers to two opposing tendencies in the universe, such as Yin and Yang, rigidity and softness, movement and so on.

"Shu Shu" is an exponential technique, that is, ancient divination, astronomy, calendar and other knowledge.

The meaning of this sentence is that people should take the change of Yin and Yang in nature as the law and mathematics as the means of reconciliation, adjust their life rhythm and behavior habits, and maintain harmony and unity with nature in order to achieve the goal of health and longevity.