Given their living in this day, the philosophers also have to seriously struggle with problems with which they always face in daily life. Such ones were there in the Spring and Autumn and the Warring States period of the ancient China. Two of them, Hsün tzu. and Han-fēizǐ they are the philosophers who are focused on in this paper; 'What was the way that they were struggling with their daily problems?' Hanfeizi said, "It's a mere impractical theory that either philosophies or thoughts are discussed without the touch of reality." There were some philosophers such as him, but we may regard Hsün tzu. as an important one among them. Actually he was the teacher of Han-fēizǐ but on the other hand they often have been found thinkers who had thought so differently each other. One of the frameworks of their thoughts, however, is to advocate "the philosophy corresponding with its days." So exceptional it was in that day. The juchia, Moism and even Taoism, they usually thought of the teaching of the sages as the fundamental of their philosophies. However, Hsün tzu. and Hanfeizi was different. They were negative to the teaching of the sages. It was by no means the everlasting truth corresponding with any days. The soil of trees like their philosophies is consisted of struggles with the agony of Warring States period and close researches on human being. They rejected the thoughts that had set the desire of people for the moral standard about good and evil, and advocated to consider the human in itself. That is, Hanfeizi and Hsün tzu. thought that the desire of human is inevitable and it is necessary to find way how to fill it up. The way, according to Hanfeizi's core theory, is to utilize the law. He emphasizes "the shu (administrative techniques or statecraft)" and "the shi(authority)" for deliberating the construction of power, and preventing the authority from being partial. In the meantime, "the political measure corresponding with its days", it is the same for Hsün tzu.. Although he was a little gentle unlike Han-fēizǐ he also insisted on administering the law strictly. Also he said that the teaching of the sages should be renewed endlessly. Moreover, he emphasized the possibility of human being more than anyone else, advocating whoever could be a sage.