Based on the tomb mural motif of ”taiyizuo” unearthed in Dingbian and Jingbian counties of modern Shaanxi province in 2003 and 2005 respectively, this essay first reflects on the relation between the so-called ”taiyi patrolling” or ”taiyi preventing from military disaster” motif among the Mawangdui silk paintings on the one hand, and the cosmological concept of ”taiyi engendering water” or ”taiyi involving water” found in the bamboo text of the Guodian tomb on the other. Secondly this essay attempts to examine the ways of representing water in Han arts and to show that the parallel and cursive lines in the middle of the ”taiyizuo” represent a waterfall, or a gorgeous and powerful form of spring water. Therefore, the conceptual origin of the ”taiyizuo” mural’s motif can probably be traced back four or five hundred years to the bamboo text of ”taiyi shengshui” or ”taiyi engendering water” unearthed at Guodian, Jingzhou, Hubei province.