The famous Neo-Confucian Scholar, T'uo-jan-kuan-t'ung, an extremely complex concept, has been the core and dominant ideology in Zhu Xi' theory. Human beings, in spite of the potential nature which is originally good, find it hard to actualize their potential nature owing to the influence of 習氣. The purpose of Zhu Xi'theory of cultivation lies at, by removing the influence of bad habit, sactualizing the original nature in order to ascend the level of personhood to the utmost. Yet, how is this theory realized in his life and arrived T'uo-jan-kuan-t'ung? This is the main concern of this article. How does Zhu Xi establisher the factuality and necessity of the T'uo-jan-kuan-t'ung. First, Zhu Xi interprets the concept of "original nature" from the viewpoint of "天理". "Original nature" is the result of the reality and concretized Confucius canon. Not only the "Original nature" was inspired by 天理, but also Zhu Xi had the affirmative that T'uo-jan-kuan-t'ung naturally according to the acclimatization training of the body and the mind. Moreover, Zhu Xi states cumulative 格物 would have a positive influence on the T'uo-jan-kuan-t'ung. We will review relevant documents in order to clarify and understand Zhu Xi's thought in his worship of the sagacious motto "一以貫之" by Confucius.
