The main purpose of this essay is to shed light on the foundation of the core notion used in oriental medicine. Under the premise that the important notion of oriental medicine has its origin in the culture of the ancient china before B.C.$2^{sim}1$, we will get to the source notion of oriental medicine by retrospecting the analogical thinking used in the course of forming the main notion of oriental medicine. For the source notion being in various domains, we must search so many domains for example the political system including the offical system, the economic system and so on. But in this essay, we will limit the domain concerned with combat