Yuan Gong, the deacon of the Mi Shu Ge in the heaven, opened the shrine and took the holy book to human's world. Furthermore he carved the contents of the book on the stone wall of Bai Yun Dong (White Cloud Cave) in Yun Meng Mountain. Yuan Gong therefore was penalized to guard  the carved stone book for life by Jade Emperor for his breaking the heaven law and betraying the holy secret to human. In order to pass this holy book to human beings, he asked Dan Sheng to copy the book from the wall to paper. However, the plague was part of the plot by the Evil Fox, so he stolen the book from Dan as a retaliation, When Yuan Gong returned back to the Mountain, he found Dan was fighting with the Fox trying to take back the book. Doubtlessly, Yuan Gong's arrival helped Dan to win the fight. The Evil Fox was then pressed under the Yun Meng Mountain.