Five elements: refers to five substances (movement and change of elements): gold, wood, water, fire and earth. Ancient Chinese thinkers tried to explain the origin of everything in the world with these five substances. Traditional Chinese medicine uses five elements to explain various physiological and pathological phenomena. Superstitious people use the five elements to calculate people's fate. The theory of five elements first appeared in Taoism. It emphasizes the whole concept and describes the structural relationship and movement form of things. If Yin and Yang are an ancient theory of unity of opposites, the five elements can be said to be a primitive general system theory. The theory of five elements is the theory of material composition in ancient China, which is similar to the western theory of water, fire, earth and gas. However, with the development of modern chemistry, the theory of material composition of these two theories has been rejected. At the end of the Western Zhou Dynasty, China had a "five-material theory" of simple materialism. From Guoyu Zhengyu's "Earth is mixed with gold, wood, water and fire to form everything" and Zuo Zhuan's "Natural five materials are used by the people, and none can be discarded" to Shangshu Hongfan's "Five elements: water, fire, wood, gold and earth". The water is moist, the fire is inflamed, the wood is straight, the gold is leather, and the soil is fertile. It is salty when moistened, bitter when inflamed, sour when straight, pungent when leathered, and sweet when cultivated. " Record, began to abstract the attributes of the five elements, deduction to other things, constitute a fixed combination form. In the late Warring States period, the idea that the five elements are mutually victorious (gram) was put forward, and the order of victory (gram) and life was fixed, forming an interrelated model between things, spontaneously reflecting the internal structural relationship of things and their overall grasp. During this period, the theory of five elements was applied to medicine in Neijing, which played an important role in studying and sorting out a large number of clinical experiences accumulated by ancient people and forming a unique theoretical system of traditional Chinese medicine. The five elements are born together: gold begets water, aquatic wood, wood makes fire, fire begets soil, and soil begets gold. Wood fires: because the fire uses wood as fuel material, and the wood is burned out, the fire will automatically extinguish the fire and produce soil: because after the fire burns the object, the object turns to ashes and the ashes are soil; Native gold: because gold is contained in clay stones, gold is extracted from raw water after smelting: because if gold is burned by fire, it will dissolve into liquid, and liquid belongs to water; Water depends on ironware to enlighten and dredge aquatic wood: because water irrigates trees, trees can flourish. Five elements are in harmony: Jin Kemu, Muketu, Tuke water, water can overcome fire, and fire can overcome gold. The public wins the few, so water wins the fire; Because fire goes out when it meets water, essence wins strength, so fire wins gold; Because fire can dissolve metal, hardness wins softness, so gold wins wood; Because the cutting tools cast by metal can cut down trees and scatter them, wood beats soil; Because the roots and seedlings are powerful, they can break through the obstacles of soil, and the soil is better than water. Because soil is waterproof, the five elements are mathematical: gold is seven, wood is eight, water is six, fire is nine and soil is five. Through long-term contact and observation, the ancient working people realized that each of the five elements had different performances. "Wood is straight and straight" means that wood has the characteristics of growth and rising; "Fire is said to be inflamed", which means that fire has the characteristics of fever and upward; "Earth-made crop wall" means that soil has the characteristics of planting crops and biochemical things; "Jin said to follow the leather" is that gold has the characteristics of killing and changing; "Water is moist" means that water is moist and downward. Based on this understanding, the ancients classified all kinds of things in the universe into five elements, so conceptually, they are not wood, fire, earth, gold and water themselves, but a large class of abstract properties that can be compared with various things and phenomena in characteristics. Five-element thought category in the history of China's philosophy: "Up to now, we have basically analyzed the various meanings of the five elements. For the sake of clarity, we will comprehensively list these meanings as follows: (1) refers to five principles of behavior, which is suspected to be held by Xunzi. (2) It refers to five physical properties, such as those held by Shang Shu Hong Fan and Zhou Zi Tai Chi Diagram. (3) refers to the five necessary material conditions in human life, such as those held by Cai Mo in Zuo Zhuan. (4) Five principles of taxonomy, such as those held by Lu Chunqiu. (5) It refers to five "forms of existence" existing through the flow of Yin and Yang, such as Bai Hutong and Huangdi Neijing Suwen. (6) refers to wood (plants), fire, soil, metal and running water. Their symbolic meanings are vitality, activity or change, gestation or cultivation, prohibition and concealment. This is held by Xiao Ji. The above six meanings of the five elements, except (1) and (3), are the complete meanings of the five elements in the thought of Yin-Yang and Five Elements if the other four items (2), (4), (5) and (6) are combined. * Orientation: East, West, North, South and Middle. * The five elements are drowning: golden steaming water, water drowning wood, wood drowning fire, fire drying soil, and soil covering gold. * The relationship between heavenly stems, five elements and orientation: A is the pillar of the East. B is the tree of flowers and fruits, the East. C is the fire of the sun, south. Ding is the fire of lamps and candles, south. E is the soil of the city wall, China. I am an idyllic land, China. Geng is the gold of the axe, the west. Xin is the gold of jewelry, western. Ren is the water of rivers, the north. Deck is the water of rain and dew, north. The five elements corresponding to the Eight Diagrams are: golden-dry, dry-sky, zemu-earthquake, Xun-earthquake, thunder, Xun-earth-Kun, Gen-Kun, Gen-mountain water-Kankan-water fire-separation is fire * Earth branches collide (excite): son (mouse) and noon (horse). * Earthly branches are harmful (piercing): offspring (rats) are harmful to sheep, ugliness (cows) is harmful to horses, yin (tigers) is harmful to snakes, Mao (rabbits) is harmful to dragons, Shen (monkeys) is harmful to pigs. * Earthly branches punish each other (hinder): the son (mouse) is punished with Mao (rabbit), the ugly (cow) with Xu (dog), the yin (tiger) with Si (snake), the Chen (dragon) with Chen (dragon), and the Si (snake) with Shen (monkey). * The combination of ground branches (harmony): the combination of ground branches: Zi (mouse), Chen (dragon), Shen (monkey) and water bureau; Si (snake). You (chicken). Ugly (ox) alloy bureau; Yin (tiger). noon (horse). Xu (dog) fire bureau; Hai (pig). Mao (rabbit). Wei (sheep) Hemu Bureau; The earthly branch of Liuhe: the son (mouse) and the ugly (cow) combine to turn into soil, the yin (tiger) and the sea (pig) combine to turn into water, the rabbit (rabbit) and the dog (dog) combine to turn into fire, the dragon (Chen) and the unitary (chicken) combine to turn into gold, and the snake (Si) and the monkey (Shen) combine to turn into gold. * The relationship between the earthly branch and the five elements and orientation: the son (mouse) belongs to the sunny water, and the north; Hai (pig) belongs to yin water, north. Yin (tiger) belongs to poplar, the east; Mao (rabbit) is a shade wood, oriental. The fourth (snake) is a yin fire, south; Noon (horse) belongs to yang fire, in the south. Shen (monkey) belongs to Yang Jin, western; Unitary (chicken) belongs to yin gold, western. Chen (dragon). Xu (dog) belongs to yang soil, Chinese side; Ugly (cattle). Not (sheep) belongs to the dirt, Chinese. 1, the characteristics of gold? Jin Doctrine and Jin Yue say "following the reform", following, obeying and obeying, and reforming, so Jin has the characteristics of flexibility, flexibility, extension, reform and elimination. ? Jin: He is strong in nature, strong in nature, and prosperous in four pillars. His face is square and his bones are delicate, his body is healthy and clear, he is loyal to others, resolute and decisive, he is not afraid of violence, he is generous in aiding the poor, he hates evil, he is self-aware and knows shame. ? Four pillars of gold are too taboo, reckless, courageous, greedy, heartless and unjust, indecisive, greedy and vicious. ? 2. What are the characteristics of wood? Muzhuren: Muyue: "Straightforward", bender, bender, straighter, stretched, therefore, wood has the nature of being flexible and stretchable. Mu Na's air of soil and water can grow and develop, so wood has the softness and kindness of growing up and slender. ? Wood: Its straight nature, its harmony, the wood among the four pillars, kindness, gentleness, fraternity, compassion, helpfulness, generosity, slender figure, natural and unrestrained manner, thick and bright hair, lively, positive and self-motivated. ? If the wood in the four pillars is too taboo, it will be stubborn, extreme, cowardly, jealous, ungrateful and cold. ? 3. What are the characteristics of water? Water governs wisdom: water is called "moistening the lower part", and the moistening part is moist, and the lower part is downward, so water has the characteristics of moistening the lower part and studying and hiding it. ? Water is smart and good in nature, and those who are full of water in the four pillars have gods in their faces, flexible minds, resourcefulness, extraordinary talents, strong adaptability and clever language. ? Too much water in the four pillars is taboo, greedy, lustful, scheming, radical in speech, easy to cause trouble, and those who fail are short in stature, dark in face, capricious, timid and narrow-minded. ? 4. What are the characteristics of fire? Fire is the main ceremony: fire says "inflammation", inflammation, heat, and upward. Therefore, fire has the characteristics of heating, warmth and upward, and fire has the function of driving away cold and keeping warm, and can exercise metal. Fire is impatient and respectful: those who are prosperous in the four pillars are bright, positive, courteous and courteous, pay attention to appearance, warm and heroic, frank and friendly. ? Those who are too jealous of the fire in the four pillars are red-faced, impatient, impulsive, aggressive, and easy to get into trouble. Those who are not as good as they are thin, arrogant, treacherous and jealous, and have no end. ? 5. What are the characteristics of soil? The local owner believes that the soil is called "crop", sowing is a crop, and harvesting is a crop. The soil has the ability to carry things and store them biochemically. The native land is the mother of all things and has a heavy contribution. Earth: its nature is heavy, its affection is thick, and the four pillars are prosperous, with round waist and moist nose, beautiful eyebrows and strong eloquence, loyal and sincere, courageous and generous, and will do what he says, and be willing to give and accept everything. ? Too much soil in the four pillars, taboo, introverted, stupid, stubborn, unreasonable, inferior, with a low face and a low nose, a worried look, a word that is not believed, vicious and stingy, selfish and unreasonable. 1. The basic concept of the Five Elements Theory is the movement of five substances: wood, fire, earth, gold and water. The five elements theory holds that everything in the world is generated by the movement and change of five basic substances: wood, fire, earth, gold and water. At the same time, the relationship between the five elements is used to explain the interrelationship between things, and it is believed that nothing is isolated or static, but maintains a harmonious balance in the constant movement of mutual growth and mutual resistance. This is the basic meaning of the five elements theory. Second, the basic content of the five elements theory: the characteristics of wood: the ancients called "wood is straight and straight." "Straightness" actually refers to the growth form of trees, which are straight branches and stretch upward to the periphery. Therefore, things that have the functions or properties of growth, rising, and smoothness belong to wood. Characteristics of fire: The ancients called it "fire means inflammation". "Yan Shang" means that fire has the characteristics of warmth and rising. Therefore, things that are warm and uplifting belong to fire. Characteristics of soil: the ancients called it "soil for crops", which means that soil has the function of planting and harvesting crops. Therefore, things with biochemical, bearing and receiving functions all belong to soil. Therefore, there is a saying that "soil carries four lines" and "soil is the mother of all things". Characteristics of gold; The ancients called it "the golden saying follows the leather". "From the leather" means "change". Things that have the functions of cleanliness, depression and convergence all belong to gold. Characteristics of water: The ancients called it "water is moist". It means that water is moist and downward. Things that are cool, moist and run downward belong to water. Classification of five elements of things. ① Classification: The five-element attribute of things is obtained by analogy between the nature of things and the characteristics of the five elements. If things have similar characteristics to wood, they belong to wood; Similar to the characteristics of fire, it belongs to fire and so on. For example, if the five internal organs belong to the five elements, the liver belongs to wood, the heart yang belongs to fire, the spleen belongs to soil, the lung belongs to gold, and the kidney belongs to water. If you belong to the five elements in azimuth, it belongs to wood because the sunrise is in the east and it is similar to the rising characteristics of wood. The south is hot, which is similar to the inflammatory characteristics of fire, so it belongs to fire; Sunset in the west is similar to the descending characteristics of gold, so it belongs to gold; The north is cold, which is similar to the characteristics of water, so it belongs to water. ② Deduction method. For example, if the liver belongs to wood, then the liver's main tendons and the liver's opening to the purpose of "tendons" and "eyes" also belong to wood; If the heart belongs to fire, the pulse and tongue also belong to fire; Spleen belongs to soil, so do "meat" and "mouth"; If the lung belongs to gold, then the fur and nose also belong to gold. Kidney belongs to water, so does "bone", "ear" and "two yin". (3) The Five Elements Theory also holds that things belonging to the same five elements are related. For example, the wind, wood and sour substances in the east and nature are related to the liver. The five elements of nature and human body are listed as follows. For the human body, it is to sum up various tissues and functions of the human body into five physiological systems centered on the five internal organs. The five elements (1) coexist with each other. Mutual development means that this thing has the function of promoting, encouraging and nurturing another thing; Mutual respect means that one thing can inhibit and restrict the growth and function of another. Mutual growth and mutual restraint are considered to be normal phenomena in nature in the theory of five elements; It is also a normal physiological phenomenon for human physiology. It is precisely because there is a connection between things that nature can maintain ecological balance and human body can maintain physiological balance, so it is said that "control is biochemical" The sequence of the five elements is: wood fires, fire produces soil, soil produces gold, gold produces water, and aquatic wood. The order of the five elements is: Mu Ke Tu, Tu Ke Shui, Shui Ke Huo, Huo Ke Jin, Jin Kemu. Because of the relationship between the five elements, there are four links between "giving birth to me", "giving birth to me", "rejecting me" and "rejecting me" from any line in the five elements. "Giving birth to me" and "giving birth to me" are compared to the relationship between "mother" and "son" in Difficult Classics. The one who gave birth to me is the mother, and the one who gave birth to me is the son, so the relationship between the five elements can also be called the relationship between mother and child. Take fire as an example, because wood makes a fire, the person who "gives birth to me" is wood; Because fire breeds soil, so "I am born" is soil. In this way, wood is the "mother" of fire and soil is the "child" of fire; That is, wood and fire are "mother and son", while fire and earth are "mother and son". "To overcome me" and "to overcome me" are called "invincible" and "victorious" in Neijing. That is, those who "resist me" are "invincible" and those who "resist me" are "victorious". Take fire as an example again. Because fire can make gold, the person who "I can make it" is gold. Because this fire, so "I" is water. Mutual development and mutual restraint are two inseparable aspects. Without life, there will be no occurrence and growth of things; Without gram, it is impossible to maintain the change and development under its normal coordinated relationship. Only when they are born in turn and overcome each other in turn, such as endless loops, can they be biochemical and maintain the dynamic balance between things. (2) Multiplication and aggression. Multiplication and mutual insult of the five elements refer to the abnormal phenomenon of mutual restraint after the normal relationship between the five elements is destroyed. Multiply: multiply, which means bullying the weak. Multiplication in the five elements means that a certain "line" in the five elements is too restrained to the "line" of the victim, thus causing a series of excessive restraint reactions. There are also "multiplication" and "mutual insult" in the five elements. Multiplication means excessive restraint, and mutual insult (anti-gram) means that one line in the five elements is too strong, which can cause the restrained "five elements" to be too strong and make the restrained "one line" weak, thus causing abnormal restraint between the five elements. For example, if the wood is too strong, the soil will be too strong, resulting in the shortage of soil, which is called "wood taking soil". On the other hand, it can also be due to the weakness of a certain "line" in the five elements, so the mutual restraint of it is relatively enhanced, and it is even weaker. For example, woody plants are not too strong, and their ability to restrain soil is still in the normal range. However, due to the shortage of soil itself, the strength of the soil is relatively enhanced, which makes the soil even more insufficient, which is called "soil virtual wood multiplication" Mutual insult: insult, here refers to "anti-insult." The mutual insult in the five elements means that because a certain line of the five elements is too strong, it resists the original line of "self-denial", so anti-insult is also called anti-denial. For example, when the wood is particularly strong, it is not only restrained by the gold, but also resists the gold (that is, resists the gold), which is called "the wood invades the gold", or an aspect of the anti-aggression. On the other hand, it is also due to the weakness of gold itself, not only can it not restrain wood, but it is resisted by wood, which is called "gold virtual wood insult" Multiplication and mutual insult are both abnormal phenomena, and there are both differences and connections between them. The main differences between multiplication and mutual insult are as follows: the first one is that there is too much restraint in the order of mutual abuse of the five elements, thus forming an abnormal relationship between the five elements; The latter is a restraint phenomenon in the opposite direction to the order of the five elements, thus forming an abnormal relationship between the five elements. The connection between them is that when they are multiplied, they can also be insulted at the same time; Multiplication can also occur at the same time when mutual aggression occurs. For example, when the wood is too strong, you can take the soil and insult the gold; When gold is weak, it can be resisted by wood and taken by fire. 3. The application of the five elements theory in traditional Chinese medicine shows the physiological functions and interrelationships of the viscera. ① It shows the characteristics of the physiological activities of the five organs, such as the liver is fond of reaching the limit, which has the function of relieving diarrhea, and the wood has the characteristics of hair growth, so the liver belongs to "wood"; Heart yang has a warm effect, and fire has the characteristics of yang heat, so heart belongs to "fire"; Spleen is the source of biochemistry, and soil has the characteristics of biochemical things, so spleen belongs to "soil"; Lung qi governs purgation, and gold has the characteristics of clearing purgation and convergence, so lung belongs to "gold"; Kidney has the function of controlling water and storing essence, and water has the characteristic of moistening the lower part, so kidney belongs to "water", which shows the internal relationship between physiological functions of human organs and tissues. For example, the essence of kidney (water) nourishes the liver, the liver (wood) stores blood to nourish the heart, the heat of heart (fire) warms the spleen, the spleen (soil) turns into Shui Gu's essence to fill the lung, and the lung (gold) goes down to help the kidney. This is the relationship between the five zang-organs and each other. The decline of lung (gold) qi can inhibit the hyperactivity of liver yang; The smoothness of liver (wood) can relieve the depression of spleen and soil; The transportation of spleen (soil) can stop the flooding of kidney water; Moisturizing kidney (water) can prevent the hyperactivity of heart fire; Yang-heat of heart (fire) can restrict lung-qi-jin-qing-su too much, which is the relationship between the five internal organs. ③ Explain the relationship between the human body and the external environment, such as four seasons and five flavors of food. In a word, the application of the theory of five elements to physiology lies in explaining the unity of the interrelation between human viscera and tissues, as well as between human body and external environment. It shows that the pathological influence between zang-fu organs, such as liver disease, can spread to the spleen, which is a matter of taking advantage of the soil; Spleen disease can also affect the liver, which is an insult to wood; Liver and spleen are the same diseases, which affect each other, that is, wood stagnation and soil deficiency or soil stagnation and wood stagnation; Liver disease can also affect the heart, which is the mother disease and the child; Affect the lungs, for wood to insult gold; Affect the kidney, for the child disease and mother. This is true of liver disease, and so is the pathological changes of other organs. The relationship between the five elements can be used to explain their pathological interaction. The relationship between the five elements and other traditional cultures in China In the traditional culture of China, the five elements are closely related to the orientation, heavenly stems, colors and beasts. Oriental: A, B: Wood: Green: Qinglong South: C, D: Fire: Red: Suzaku West: Geng, Xin: Jin: White: White Tiger North: Ren, Gui: Water: Black: Xuanwu Center: E, Ji: Earth: Yellow: Huang Lin is used for the diagnosis and treatment of diseases (1. If you see blue in the face, like eating sour taste, and see a string pulse, you can diagnose liver disease; The face is red, the taste is bitter and the pulse is red, which can be diagnosed as excessive heart fire. Patients with spleen deficiency have a blue face and take advantage of the soil for the wood; Heart patients, seeing black, taking fire for water, and so on. Diagnose the spread of five zang-organs diseases from its color, taste and pulse. For example, in patients with spleen deficiency, the face is blue, and the pulse is like a string, which spreads the spleen for liver disease (wood takes soil); People with lung disease have a red face and a red pulse, which is a heart disease that spreads to the lungs (fire takes gold). Any one of the five zang-organs is diseased, and it can spread to the other four zang-organs. According to the theory of five elements, there are four transmission and change relationships: multiplication, mutual aggression, maternal disease, child and child disease and mother. Judging the prognosis of the disease from the relationship between color and pulse. If the liver disease looks blue, see the string pulse, which is consistent with the color pulse. If you don't see the string pulse, but see the floating pulse, it belongs to the pulse that wins each other, then the pulse that overcomes the color (Jin Kemu) is the inverse, and the main prognosis is poor; If you see a deep pulse, it belongs to the pulse that is related to each other, that is, the pulse that produces color (aquatic wood), which is smooth and has a good prognosis. (2) Application in the treatment of diseases ① Control the spread and change of diseases of the five internal organs. If liver disease can spread the spleen (wood takes soil), replenish the spleen in advance to prevent it from spreading. "When you see the disease of the liver, you know that the liver should be transmitted to the spleen, so you should first consolidate your temper." ② Determine the principle of treatment. It is summarized as the method of "reinforcing the mother and purging the child", that is, "deficiency is reinforcing the mother, but actually purging the son". Tonifying the mother is aimed at the deficiency syndrome with mother-child relationship, such as tonifying the kidney due to liver deficiency, because the kidney is the mother of the liver, so the kidney-tonifying water can produce liver wood. Diarrhea is treated according to the evidence of mother-child relationship, such as liver excess purging heart, because heart is the son of liver, purging heart fire is helpful to purging liver wood. According to the relationship between the two, the principle of treatment can be summarized as the method of "restraining the strong and weakening the skin", that is, purging the strong of the person who is restrained and supplementing the weak of the person who is restrained. If the liver wood is too strong and the spleen soil is too strong, it must be diarrhea, and the spleen soil is weak and must be supplemented. (3) Formulating treatment methods. In terms of drug treatment, such as nourishing water and burying trees, it is a method of nourishing kidney yin to conserve liver yin, which is suitable for diseases with kidney yin deficiency and liver yin deficiency. Another example is the method of nourishing the soil and generating gold, which is the method of invigorating the spleen and benefiting the lung, and is suitable for the disease of spleen losing health and lung qi deficiency and weakness. Another example is the method of supporting soil and restraining wood, which is a method of treating liver hyperactivity and spleen deficiency with drugs for soothing liver and strengthening spleen. In addition, in acupuncture and psychotherapy, the restraint of the five elements can be used to select points and adjust emotions. If sorrow can overcome anger, it is because sorrow belongs to the lung and anger to the liver. In the process of practical application, the theory of yin-yang and five elements is often interrelated and inseparable. The combination of the theory of Yin-Yang and Five Elements can not only explain the general relationship between contradictory sides of things, but also explain the more specific and complex relationship between things, which is conducive to explaining complex life phenomena and pathological processes. In the four pillars and five elements, the viscera and parts that need to be supplemented correspond to each other: the liver and gallbladder belong to the viscera, bones and limbs. Excessive prosperity or aging is more suitable for diseases such as liver, gallbladder, head, neck, limbs, joints, tendons and veins, eyes and nerves. Fire: the heart and small intestine belong to the viscera, blood vessels and the whole circulatory system. Excessive prosperity or aging is more suitable for small intestine. Diseases of face, teeth, abdomen, tongue, etc. Soil: Spleen and stomach are internal and external organs, and belong to intestine and the whole digestive system. Excessive prosperity or aging is more suitable for diseases of spleen, stomach, ribs, back, chest, lungs and abdomen. Gold: Lung and large intestine are internal and external organs, and belong to trachea and the whole respiratory system. Excessive prosperity or aging is more suitable for large intestine. Diseases of nose and trachea, etc. Water: Kidney and bladder are internal and external organs, and belong to brain and urinary system. Excessive prosperity or aging is more suitable for diseases of kidney, bladder, shin, foot, head, liver, urine, pudendum, waist, ear, uterus and hernia. In martial arts, ancient martial artists used gold, wood, water, fire and earth (five elements) The clinical application of the five elements theory of Chinese medicine is to classify all parts of the human body into five categories: wood, fire, earth, gold and water. There is a vertical relationship between similar things: for example, those belonging to wood, such as liver, gallbladder, eyes, tendons, anger, blue, acid, wind, etc., and the relationship between them is "the liver opens the eyes", "the main reinforcement of the liver", "anger hurts the liver", and liver diseases are prone to "liver wind". At the time of visit, cyan is mostly liver wind, red is mostly heart fire, yellow is mostly spleen dampness, white is mostly lung cold, and black is mostly kidney deficiency; When taking medicine, sour taste enters the liver, bitter taste enters the heart, sweet taste enters the spleen, pungent taste enters the lung, salty taste enters the kidney and so on. There is a horizontal connection between all kinds of things: that is, using the changes of generating grams, taking advantage of insults and so on to explain the mutual connection between the five internal organs under physiological and pathological conditions. For example, a certain dirty is sick, which can be transmitted from another dirty because of the relationship between birth and gram, or can be transmitted to another dirty through the relationship between birth and gram. "Seeing the disease of the liver, knowing that the liver transmits the spleen, first strengthening the spleen" and "deficiency supplements its mother, but actually purges its son" are the concrete applications of this theory. Non-hydraulic fire, bentonite water, ethyl clay, gengjin water discharge. Among the five elements, fire has the strongest attack, water has the best mitigation ability, wood has the strongest healing ability, gold has the strongest impact ability and soil has the best defense ability! The five elements talk about the theory and application of the five elements in various aspects above the seasons, but I think there is something missing: the five elements and the four seasons. The following is my humble opinion after watching < Lecture Room > in the afternoon. The five elements refer to the five movement modes of gas. Spring belongs to wood, which represents the movement mode of gas spreading around. In spring, trees and flowers flourish, and the branches of trees spread around and transport nutrients to the branches, so spring belongs to wood. Summer belongs to fire. Represents the upward movement of gas. Fire is characterized by upward movement, and various plants grow upward in summer, so it belongs to fire in summer. Autumn belongs to gold, which represents the inward contraction of gas. Gold is characterized by stability, harvest in autumn, and people save food to prepare for winter, and leaves fall, so autumn belongs to gold. Winter belongs to water, which represents the downward movement of gas. Water flows downwards, and everything sleeps in winter, accumulating nutrients for spring.