 The "Daoyuan" (, "Origins of the Tao") is one of the Huangdi Sijing manuscripts discovered in 1973 among the Mawangdui Silk Texts excavated from a tomb dated to 168.Like the "Songs of Chu" above, this text is believed to date from the 4th century and from the same southern state of Chu.This Taoist cosmogonic myth describes the creation of the universe and humans out of formless misty vapor, and Birrell notes the striking resemblance between its ancient "all was one" concept of unity before creation and the modern cosmogonic concept of gravitational singularity.