What do you mean by the difference between the sun and the sky?
Yin and Yang are not isolated and static, but there is a relationship of relativity, dependence, growth and decline and transformation. The following points are made:
(1) Relativity of Yin and Yang: Yin and Yang are two attributes of things, representing two aspects of contradiction, opposition and unity. It is a summary of the opposing sides of interrelated things and phenomena in nature. If the sky is yang and the earth is yin; It is sunny during the day and cloudy at night; The upper part is yang and the lower part is yin; Heat is yang and cold is yin; Positive and negative electricity, etc. All this shows that everything exists in the universe in opposition, but the yin and yang attributes of things are not absolute, but relative, and must be determined according to the conditions of mutual comparison. As far as the human body is concerned, the body surface is yang and the internal organs are yin; As far as internal organs are concerned, the six internal organs belong to yang and the five internal organs are yin; As far as the five internal organs are concerned, the heart and lung belong to yang in the upper part, and the liver and kidney belong to yin in the lower part; As far as the kidney is concerned, the "essence" hidden in the kidney is yin, and the "fire of life gate" of the kidney belongs to yang. It can be seen that the yin and yang attributes of things are relative.
(2) Mutual root of Yin and Yang: Ancient physicians called it "mutual root of Yin and Yang". There are some arguments in traditional Chinese medicine, such as "Yang roots in Yin, Yin roots in Yang," "Solitary Yin is not born, and solitary Yang is not long" and "Without Yang, Yin cannot be born, and without Yin, Yang cannot be transformed". This means that Yang is attached to Yin, and Yin is attached to Yang. There is a mutual relationship between them-that is, neither the Yang side nor the Yin side can exist alone without the other. In nature, the exterior is yang and the interior is yin; The upper part is Yang, the lower part is Yin, the daytime is Yang, and the night is Yin. If there is no upper, outer and daytime, it is impossible to explain the lower, inner and night. Physiologically speaking, functional activities belong to yang, and nutrients (body fluid, essence and blood, etc.) belong to yin. Various nutrients are the material basis of functional activities. With enough nutrients, functional activities will be vigorous. On the other hand, the source of nutrients is absorbed by the functional activities of internal organs.
the above shows that the two are interdependent, existential and * * *. If there is no yin, there is no yang. If there is yin and no yang alone, or there is yang and no yin, it is bound to be like the saying in Neijing: "The solitary yang is not born, and the solitary yin is not long", then everything will come to a standstill.
(3) the growth and decline of yin and yang: it means that the two sides of yin and yang are constantly moving and changing on the basis of opposition and mutual roots, and the phenomena of "yin eliminating yang and yang eliminating yin" constantly appear, which is the process of the development and change of all things. For example, the climate change in four seasons, from winter solstice to spring in Zhixia, gradually becomes hot from cold, which is a process of "yin eliminating yang growing"; From summer solstice to autumn to winter, from heat to cold, it is also a process of "yang eliminating yin and growing long" Due to the ups and downs of yin and yang in the four seasons, there are changes in cold, hot and cool. Everything can grow and collect. If the climate loses its normality and abnormal changes occur, disasters will occur.
Clinically, different syndromes are often explained by the fact that Yin and Yang are on the high side and on the low side (that is, the ebb and flow of Yin and Yang). For example, if the cold belongs to yin and the yin is abundant, you will see cold syndrome, such as stomach cold, abdominal pain and diarrhea after cold; When the heat belongs to yang, the heat syndrome can be seen, such as acute pneumonia, high fever, thirst, red skin and other acute fever symptoms. Some debilitating diseases are caused by deficiency rather than excess of yin or yang. If the yin of a zang-fu organ is deficient, it is called "yin deficiency", which means that yin disappears, and "yang" is relatively prominent. Because heat belongs to yang, yin deficiency sees heat syndrome. This phenomenon is called "deficiency heat". If the yang of a zang-fu organ is deficient, it is called yang deficiency. At this time, the yin is relatively prominent. Because cold belongs to yang, the yang deficiency sees cold syndrome. This phenomenon is called deficiency cold.
Under normal circumstances, Yin and Yang are always in relative balance. If the relationship of "ebb and flow" exceeds a certain limit and the relative balance cannot be maintained, a certain aspect of Yin and Yang will be over-flourishing and over-declining, leading to the occurrence of diseases.
(4) transformation of yin and yang: refers to the same yin and yang. Under certain conditions, when it develops to a certain stage, both sides can transform into their opposite aspects, and yin can be transformed into yang, and yang can be transformed into yin, which is called "transformation of yin and yang".
if "the rise and fall of yin and yang" is a process of quantitative change, then transformation is a process of qualitative change. In Su Wen, the so-called "heavy yin will lead to yang, double ninth will lead to yin", "extreme cold leads to heat" and "extreme heat leads to cold". When it is extremely cold, it is possible to transform into a hot direction, and when it is extremely hot, it is possible to transform into a cold direction. For example, some acute febrile diseases, due to extremely heavy pathogenic heat, consume a lot of vital energy of the body. Under the condition of continuous high fever, a group of yin-cold crises such as hypothermia, cold limbs and slightly heartbroken pulse may suddenly appear. This kind of disease changes, that is, it turns from yang to yin. If the rescue is timely and handled properly, the healthy qi will be restored, the limbs will turn warm, the color pulse will turn harmonious, and the yang will be restored, which will change from yin to yang, and the condition will improve. In addition, the common clinical changes from excess to deficiency, from deficiency to excess, from exterior to interior and from interior to exterior are also examples of the transformation of yin and yang.
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universality and contradiction. Its * * * nature is that contradictions exist in all processes and run through all processes. Contradictions are movements, things, processes and thoughts. To deny the contradiction of things is to deny everything. This is the truth of * * *, all times and all over the world.
Identity, unity, consistency, mutual penetration, mutual penetration, mutual dependence (or dependence), mutual connection or mutual cooperation, these different nouns all have the same meaning, which refers to the following two situations: first, the two aspects of every contradiction in the development of things, each taking the opposite aspect as its own premise, and both sides are in a unity; Second, the contradictory parties, according to certain conditions, each turned to its opposite side. These are the so-called identities.
contradictory aspects cannot exist in isolation. If there is no contradictory party against it, its own side will lose the conditions for existence.
all contradictory things are interrelated, not only in a unity under certain conditions, but also in mutual transformation under certain conditions, which is the whole meaning of the identity of contradictions.