 Tao is great and universal on the one hand, but also formless and nameless.The 4th or 3rd century "Taiyi Shengshui" ("Great One Giving Birth to Water"), a Taoist text recently excavated in the Guodian Chu Slips, seems to offer its own unique creation myth, but analysis remains uncertain.The 139 "Huainanzi", an eclectic text compiled under the direction of the Han prince Liu An, contains two cosmogonic myths that develop the dualistic concept of Yin and Yang