This paper discusses the development of the notion of shi勢in the Warring States period and its philosophical implications in terms of relativity. I argue that shi as a notion of governance became well developed between the 5th and 3rd centuries B.C. However, the Confucian philosopher Mencius and the Taoist philosopher Zhuangzi both refused to concur with the dominant current of thought, which emphasized the importance of shi. Xunzi, who theorized about shi on various levels, held some contradictory opinions toward the shi of a king . Hanfeizi developed a new notion of “man-madeshi” (人設之勢) that denoted political institutions designed by man. This article concludes that the notion of shi in the Warring States period comprises views of both “time” and “space.” However, the majority of thinkers in this period devoted much more attention to the aspect of “space” than to “time.”