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YIN-YANG
exposed to the sun belongs to Yang
unexposed to the sun belongs to Yin
origin of yin-yang
阳 阜+日+勿
阴 阜+今+云
Yin-Yang is a summary of distribute of two opposite aspects of correlative things or phenomena in the universe.
A basic theory of opposition, dependence, wane-wax and transformation of Yin and Yang is summarized to understand and explain the existence and changes of things in the whole universe.
TCM takes water and fire as symbols of Yin and Yang.
yang
warm and hot brightnessexcitement
flare up externalmotion
formless
yin
cool and coldcloudiness
inhibit flow down
internalstillnessformed
there are always two opposite aspects of Yin and Yang in all things or phenomena. In nature, for example, heaven and earth, interior and exterior, motion and stillness.
⑴Yin-Yang doctrine
①Opposition and restriction between Yin and Yang
Neither of
them an exist by its own without the other. Yin must relies on Yang, and Yang on Yin, each of the two aspects presupposes the existence of the other.
②Interdependence of Yin and Yang
③Balance on wane-wax of Yin and Yang
upper limit
lower limit
normal abnormal
④Inter--transformation of Yin and Yang
Yang yin
⑤Infinite Divisibility of Yin and Yang
It is believed that the positive and the negative aspects of a thing are both opposite to and dependent on each other, or so called “oppositing and complementing to each other”, and everything in the universe is ever in motion and changeable.
⑵Application in TCM
①Organic Structure yang yin position : upper lower exterior interior front or anterior back ordorsalzang-fu : fu organs zang organsOrgansmeridians: exterior interior
②physiological function
③pathological changes
balance excessive yang excessive yin
④diagnosis
⑤treatment