Huangdi Neijing holds that "qi must reach the middle body", that is to say, the middle body can regulate the whole body's qi, so problems related to qi and qi can be found in the human body. Even if moxibustion is not needed, massage with warm hands every day can achieve good health care effect.

Zhongshan is located in the midline of the front of the human body, the midpoint of the connecting line between the two nipples. It is not only the point of ren meridian, but also the point of soliciting pericardium meridian, and the qi meeting of Bahui point is also called "Qi Sea", so the main function of Zhongshan is to regulate the qi of the whole body.