The root of the disease is yin and yang; Treatment must be based on this. Yin, material also; Yang, the power is also.

Even yin and yang are called people. Balance between yin and yang indicates health. Health includes the balance of yin and yang within the body and between the body and the environment. The normal life activities of the human body are the result of the harmonious relationship of the unity of opposites of Yin and Yang, which makes it in a state of dynamic balance. Dacheng Guoda believes that the theory of balance of yin and yang of human body is the philosophical basis of China's traditional health-preserving culture.