Yin-Yang

• The opposition and interdependence of yin and yang
• The inter-consuming-supporting and the inter-transforming relation of yin and yang

The theory yin-yang holds that every object or phenomenon in the universe consists of two opposite aspects, namely, yin and yang, which are at once in conflict and in interdependence; further, that this relation between yin and yang is the universal law of the material world, the principle and source of the existence of myriads of things, and the root cause for the flourishing and perishing of things.

The theory of yin-yang mainly expounds the opposition, interdependent, inter-consuming-supporting and inter-transforming relation of yin and yang. These relationships between 'yin and 'yang are extensively used in traditional Chinese medicine to explain the physiology and pathology of the human body and serve as a guide to diagnosis and treatment in clinical work.

1.The opposition and interdependence of yin and yang

The opposition of yin and yang generalizes the contradiction and struggle of the two opposites within an object or a phenomenon. Ancient scholars used water and fire to symbolize the basic properties of yin and yang. That is to say, the basic properties of yin simulate those of water,