Chuangtzu was an ancient philosophers was good at using myth. He explored philosophical doctrine and revealed his wisdom through the use of allegory. In “Shiau-yau yu”, he clearly explained the meaning of “K'un changes and becomes P'eng”, and declared its central thought to be the spirit of Self-transcendence. It could only be reached by seeking to become one with all things. The completion of Chuangtzu's spiritual self-transcendence has a close relation with primitive religious belief. Chuangtzu inherited the myth of becoming in “Shan-hae Jing”. From it, he developed the spirituality of self-transcendence through the union with all things. He also kept some of the ancient believes in ghosts and spirits; these believes are still alive in Chinese religions today.