This article is the theory of knowledge should be Articles: ancient and modern theme for the occasion of the aims of the Mexican science or knowledge Xun Xue principles or methods to introduce readers to the above theory of knowledge in Chinese philosophy reflected in the article, are dealt with ink on cognitive science and Xun Xue conditions, approaches, knowledge of the nature of classification and presentation of Chan. The article explains the specific ink identified seven kinds of reasoning, and, (...) and three tables, induction and the use of reductio ad absurdum. In the latter half of the article discusses the interaction between Xun Xue to Heaven under the theory of knowledge-based theory, cognitive Xun Xue to highlight the properties of functions, the knower and the known resolution. Xun Xue in the "out through the class' knowledge of theory and methods, and" One empty and quiet, "the knowledge of ethics, the end the theory of knowledge is carried out for both evaluation and suggestions. As an occasional contribution to the theme of this current issue, this paper is just an introduction of Chinese epistemology in terms of the epistemological principles and methods in the doctrines of Hsun-tzu and Mo-tzu. Here we talk about how these two doctrines present the cognitive conditions, approaches, the classifications and statements about the nature of knowledge. This paer first explains specifically Mo-tzu's seven way of inference, referring also to the three elements of discussion, induction, and reduction ad absurdum. The latter half of this article focuses on Hsun-tzu's theory of knowledge under the interactive relationship between Heaven and Man, in order to bring forward the epistemology of the doctrine of Hsun-tzu. In the end, the two epistemologies of the two doctrines are both examined and given suggestions. (shrink)