Principle of due date
It is the philosophy that describes the period as the only source of all things in the world, and from then on, the occurrence and development of all phenomena. Typical scholars are Seo Kyung-deok, Lim Sung-joo, and Choi Han-gi. The principle of annihilation contradicts the principle of the two principles and claims that the material "period" forms the basis of the world. According to him, the material 'period' is filled in space and all objects are composed of 'period', and the spiritual 'Lee' It is secondary, and it is nothing more than the inner law of the movement of 'ki'. The principle of anniversary explained the cause of development and development of all objects and phenomena in the world as self-motion of material "period". According to the principle of anniversary, the only thing that is the only source of the world, the 'material' which is the object of all things, contains the two elements of sound and omniscience, which have different properties in themselves. Through these interactions, .