The door god comes from one of China's four classical novels.

A: The main content between the eighth journey to the West and the eighth journey +0 10 is "Wei Zhi dreamed of beheading the dragon king".

1. The Dragon King of Jinghe made a bet with Mr. Shubu. As a result, he broke the dogma and should be punished. The Jade Emperor appointed Wei Zhi as the supervisor. King Jinghe pleaded with Emperor Taizong for his life. Emperor Taizong agreed, and when it was time to kill the dragon, he summoned Wei Zhi to play chess with him. Unexpectedly, Wei Zhi took a nap in the rain, and his soul ascended to heaven and beheaded the Dragon King. The Dragon King complained that Taizong had broken his word and cried outside the palace day and night for his life. Emperor Taizong told his ministers that General Qin Baoshu said, "I would like to stand outside with Wei Chijingde in uniform." . Emperor Taizong agreed. There was really nothing that night. Emperor Taizong could not bear the pain of the second commandant, and ordered the skillful painter Dan Qing to draw the true face of the second commandant and stick it on the door.