In ancient books and folklore, on the one hand, he is demon fairy, a strange man who often suffers from Jianghuai and harms the people; On the other hand, he was praised and worshipped as a dutiful son and a god of justice. There are many shocking fairy tales about Wu, especially the story that Huaiyuan led hundreds of mountain monsters to fight, and was later surrendered and imprisoned at the foot of Guishan Mountain in the lower reaches of Huaihe River (it is said that he was imprisoned in Tongbai Mountain). Later, Wu was moved to The Journey to the West by Wu Cheng'en and became a famous Monkey King, and Wu was transformed into the Monkey King by the Monkey King. Wu myth mainly spreads in Huaiyuan and Huaisi areas.