Encounter Taotie by chance at the beginning and practice longevity skills

(The card for the previous chapter has been reviewed. I will send a letter to get perfect attendance and make up for it tomorrow. You don’t need to read this chapter.)

Yin-Yang theory is a category of ancient Chinese philosophy. Deng's modern yin and yang is a division or subdivision of the "unity of opposites" or the "contradictory relationship", and the two are species relationships. The law of the unity of opposites is the superordinate concept of "yin and yang", while yin and yang are the two subordinate concepts of the unity of opposites.

Yin and Yang are a pair of opposite qualities or attributes that are incompatible but closely related to each other. The connotations of yin and yang negate each other. One concept "yin" affirms the yin attributes of the object, while the other concept "yang" negates the attributes affirmed by the yin concept as the attributes of the yang object.

The extensions of yin and yang are mutually exclusive and complementary to each other, and their sum is equal to the extension of their nearest genus concept, that is, the sum or union of the extensions of the two species concepts.

Yin and Yang are two different states and attributes in the unity of opposites or contradictions, a summary of a pair of philosophical or logical categories, that is, two things or one thing are interdependent, interrelated, and opposite to each other, mutually exclusive, mutually negating, and oppositely mutually exclusive. A pair of inherited and juxtaposed concepts. (Modern Yin-Yang concept and definition by Deng Yu et al.).

Through the observation of contradictory phenomena, people gradually elevated the concept of contradiction to the category of yin and yang, and used the growth and decline of yin and yang to explain the movement and changes of things. The theory of yin and yang holds that the world is material, and matter is composed of two parts: yin and yang. Everything that moves violently, is outward, rising, warm, and bright belongs to yang. Relatively static, reserved, descending, cold, and dark are all Yin. Therefore, there are two opposite sides of yin and yang. Under the action of the growth and decline of yin and yang and the unity of opposites, they mutually support, restrict and change each other to form all things in the world. Traditional Chinese medicine uses the concept of the unity of opposites of yin and yang to explain the complex connections between the upper and lower parts of the human body, the internal and external parts, and the complex connections between human life and external links such as nature and society. The relative balance of the unity of opposites of yin and yang is the basis for maintaining and ensuring the normal activities of the human body; the imbalance and destruction of the relationship of the unity of opposites of yin and yang will lead to the occurrence of human diseases and affect the normal activities of life.

Qi, blood and body fluid are the basic substances that make up the human body and are the material basis for physiological activities of organs, meridians and other tissues and organs.

Qi is the most basic substance that constitutes the human body and maintains human life activities. It has physiological functions such as promotion, warmth, defense, fixation, and gasification. When Qi comes together, an organism is formed; when Qi disperses, the body dies. Zhuangzi said: "There is one Qi in the world." The whole world is one Qi. With this breath, it moves, is endlessly alive, and changes continuously. Without this breath, it is finished.

Blood is the basic substance that constitutes the human body and maintains human life activities. It has high nutritional and moisturizing effects. Blood must circulate in the veins to perform its physiological functions. Blood circulates in the veins, reaching the internal organs, and externally reaching the skin, flesh, muscles and bones, constantly providing sufficient nutrition and moisturizing effects on various organs, tissues and organs throughout the body, and maintaining normal physiological activities of the human body.

Body fluid refers to the internal body fluids and normal secretions of various organs, tissues and organs, and is a general term for all normal fluids in the body. The properties, functions and distribution parts of Jinhe liquid are different. Jin means that it is relatively thin in nature and has greater fluidity. It is distributed in the skin and muscles of the body surface, and can penetrate into the blood vessels and play a moistening role. Fluid refers to a substance that is thicker in nature and less fluid. It flows into tissues such as joints, organs, brain, and marrow, and plays a nourishing role.

Qi, blood, and body fluids are the energy required by the body's organs, meridians, and other tissues and organs to carry out physiological activities, and qi, blood, and body fluids depend on the normal physiological activities of the organs, meridians, and other tissues and organs. If the metabolism of qi, blood and body fluid is abnormal or the organs, meridians and other tissues and organs cannot carry out normal physiological activities, diseases will occur.