《黄帝内经》"阴阳"概念解析OACSTPCD

Yin and Yang is the core concept in Huang Di Nei Jing.From perspective of set theory,Yin and Yang can be regarded as a co-set complementary binary classification symbol,referred to as complementary Yin and Yang.Yin and Yang can be used to divi vari-ables,and the two opposite composite vectors or factors that affect the change of variables are called Yin Qi and Yang Qi,and the rela-tionship between Yin Qi and Yang Qi and the variables is similar to the relationship between force and acceleration in Newton's laws,which is the cause of change.Yin and Yang are relative and can be classified hierarchically.The difference between Yin and Yang and the western scientific symbols is that the former is not completely abstract with a specific connotation,is not reciprocal,implies order and structure,and has a greater amount of information than the abstract symbols.Yin and Yang sometimes have the law of reverse change,referred to as the Yin and Yang rocker,and the law of change in the same direction of the evolution of life,which together constitute the Yin and Yang spiral.TCM theories focus on relationships,and the Yin and Yang,the Four Image of Yin and Yang as well as the Three Yin and Three Yang systems are special symbolic tools to describe the relationships in TCM,which is the key to the formation of TCM theory.