This article is divided into four parts, dealing first with the allusion of Qi-yun-shen-dong, the interpretations about it during different times in history and the contemporary interpretation, and finally the conclusion. The first part is to figure out what Xie He meant by the term through studying all the known literatures. The second part is to show the meanings this proposition has provoked throughout history by looking the discussions made during different times. The third part is to sort out the news interpretations made by the contemporary scholars about the concept.