The theory of yin and yang is an ancient philosophical theory that studies the connotation of yin and yang and the laws of its movement and change. Yin and yang are used to explain the occurrence, development, and change of everything in the universe.
The theory of yin and yang holds that the world is a material whole, and the world itself is the result of the union of opposites of yin and yang. The interaction of yin and yang contributes to the occurrence of all things and promotes the development and change of everything.
