Five tones refer to palace, business, horn, sign and feather. Five tones refer to five sounds, namely, shouting, laughing, singing, crying and groaning, which are related to the five internal organs. For example, the liver is barking, the heart is laughing, the spleen is singing, the lungs are crying and the kidneys are moaning. Seven evils and eight benefits are recorded in the medical book Lun Shi Liang Fang unearthed in Mawangdui, Changsha. It is proposed to remove and prevent seven evils and eight benefits in order to achieve the effect of health care. "Su Wen? 6? 1 ancient naivety holds that at the age of eight, men's kidney qi began to flourish, and reached its peak at the age of four or eight, which is the four benefits of men; At the age of seven, women's kidney qi began to flourish, reaching its peak at the age of four or seven, which is the four benefits of women-eight benefits. Men's kidney qi began to decline in May and August and was exhausted in August, which was a man's four losses. Women began to decline on May 7th, and they were exhausted on July 7th. This is the three losses of women-together, it is seven losses. -This is "Su Wen? 6? 1 The "seven losses and eight benefits" mentioned in the theory of Yin and Yang should be like a big picture. The "seven losses" mentioned in On World Road means "one is closed, the other is discharged, the third is thirsty (exhausted), the fourth is blessed (not), the fifth is annoying, the sixth is perfect, and the seventh is consumed." Specific practices of eight benefits. Namely: 1. Regulating essence; 2. Cause body fluid; 3. Grasp the appropriate handover opportunity; 4. store essence and nourish essence; 5. Adjust vaginal fluid; 6. Accumulate the essence; 7. stay full; 8. Prevent impotence.