This study deals with one important text in Han dynasty, called Lao Tsu Jyy-guei (《老子指歸》). We may rediscover the internal connection between Han Taoist School and Wei-Jing mysticism by analyzing the contents of the classical text. My dissertation here is that Taoist thought has its own axial development when treated as an academic community which always interacts with other academic communities led by Confucian School. This article tries to follow this hypothesis by investigating three dimensions of this text. First of all, we discuss the academic position of Jyy Guei in Han dynasty and the "gasification" viewpoint, i.e. the epistemological and ontological understanding found in Jyy Guei. We also talk about the interaction between Tao and beings. Secondly, we deal with the political understanding in Jyy Guei by unfolding the coral? discourse of political roles with the Sage. The skills to rule and the ideal type of policy dwelled on in Jyy Guei have been well discoursed at the last chapter. And we try to initiate some critical points introspectively for further study in conclusion. Jyy Guei conveys the internal essence of thought in Lao-Chuang Taoism and Yellow-Lao Taoism ("Four Texts of Yellow Emperor" and "Hwai Nan Tsu" included) to Wei-Jing Taoism (also famous as Wei-Jing Mysticism). We can easily trace and catch the important transition in Middle-Age Chinese political philosophy just by analyzing what we get in this important Taoist text.