"Everything grows by the sun", "All diseases are caused by cold, and health care is expensive in nourishing the yang". The purpose of medicinal moxibustion to strengthen yang is to eliminate diseases and strengthen the body by supplementing human yang. The sub-health problem mentioned now is caused by the lack of yang. It can be said that the source of all diseases is the lack of yang. In principle, Fuyang health care is suitable for all people. Because of physiological reasons, the middle-aged and elderly people are relatively deficient in yang, so it is more suitable to use yang-supporting medicinal moxibustion.