The idiom "seven damages and eight benefits" was first recorded in Huangdi Neijing, and it was mentioned in the theory of yin-yang similarity. Because there is no clear explanation, there are many speculations in later generations, such as the theory of yin and yang, the theory of yin and yang, the theory of four images, the theory of sexual intercourse and the theory of alchemy. In traditional Chinese medicine, seven damages and eight benefits in the process of human growth and development are discussed. Women take seven as the discipline and men take eight as the discipline, so seven refers to women and eight refers to men. Seven damages and eight benefits are also important concepts that closely combine sexual activity with health preservation.
But in modern times, people also understand the seven losses and eight benefits together with the housekeeping skills mentioned in China's ancient housekeeping culture. The so-called seven losses in this statement refer to seven kinds of sexual life that are harmful to human health and longevity; The so-called eight benefits refer to eight practices that are beneficial to human health and longevity. The theory of "seven damages and eight benefits" first appeared in the bamboo slips "Talking about Heaven, Talking about Land and Tao" unearthed in Mawangdui, Changsha, Hunan Province, and was quoted by many later sex books.
Huangdi's theory of seven damages and eight benefits is very famous in Neijing.
On yin and yang calligraphy. Zhang Jingyue, a famous doctor in Ming Dynasty, called "seven" as "the number of less yang" and "eight" as "the number of less yin" according to the theory of Yin and Yang in Zhouyi, and expounded his academic thought of supporting yang and restraining yin.
Sexual intercourse. Taking the world's talk about Tao as the core, seven or eight counts. Point out several advantages and disadvantages that should be paid attention to during sexual intercourse.
An alchemist said. Based on Zhouyi Shentongqi, the essence of Zhouyi and Luoshu correspond to the human body's meridians and viscera, and a core cultivation concept in alchemy is expounded to explain the seven losses and eight benefits.
Four elephants said. Based on ancient divination, this paper expounds a common sense of traditional Chinese medicine according to the four images of July, August, June and September, that is, the tree of the East can be damaged and cannot be replenished, and the water of the West can not be replenished, which conforms to the mathematical view of Heluo.