As an ancient concept,"You(游)"had long been in existence in oracle bone inscriptions.According to its shape,in the word"()"in the oracle bone,the word"()"is used as a dynamic or static signal,while the word"()"actual-ly refers to the ruler or the leading class of the clan at that time.Combined with the role of ancient flags in communicating the ancestors of gods and the nature of witchcraft props or sacrificial rites,the original meaning of"斿"is the"communica-tion"activity of human and gods understood in the form of"the act of holding the flags while dancing"or"the act of walk-ing while dancing".It contains the four semantic features of"traveling","uncertainty","processing"and"pleasing",which forms the activity structure of"You(游)"with"process"as the core and self-purpose,as well as its special space-time dimension and generation attributes.It is in these special activity structures and activity modes that the aesthetic mean-ing of the activity of"You(游)"can be revealed,and lays the foundation for it as an important category of Chinese tradi-tional aesthetics.