Who was the man who killed the Dragon King of Jinglong River in my dream?

Wei Zhengyi dreamed of beheading the Dragon King.

During the reign of Emperor Taizong, there was a fortune teller named Yuan Shoucheng in Chang 'an who could predict the future and the past and was good at judging good or bad luck. King Jinghe refused to accept it, so he bet Yuan Shoucheng on the time and frequency of rain. When the Dragon King returned to his mansion, he received an imperial edict from the Jade Emperor, and the time and frequency of rain were completely consistent with Yuan Shoucheng's judgment. In order to win this gambling game, the Dragon King used his power to delay for an hour and deduct points. As a result, he broke the dogma and faced his lifelong fear. In desperation, according to Yuan Shoucheng's instructions, the Dragon King sent a dream to Li Shimin, the king of the Tang Dynasty, asking for help: it was none other than Wei Zhi, the minister in charge of execution at that time.

Emperor Taizong promised the Dragon King, and held Wei Zhi hostage in the name of playing chess that day, trying to stop him from executing. Unexpectedly, Wei Zhi took a nap in the middle of playing chess. In his dream, he tried to cut off the head of King Jinghe. Later, because the Dragon King wanted the life of Emperor Taizong, Emperor Taizong could not bear to be disturbed, so he sent Qin and two generals to guard the door before he could rest in peace. Seeing that the two generals were on guard too hard, Emperor Taizong called Danqing's skillful hands to take pictures of the two generals and put his portrait on the door to ensure safety. Since then, sticking the door to keep safe has become a folk custom, which has been popular ever since.

In this case, the origin of the custom of pasting doors was triggered by Kevin·Z's killing of the Dragon King. As for the story of the Dragon King who used his power to cheat for personal gain, or in order to win the gambling game, he did not hesitate to violate the dogma of "breaking his promise" (by the way, the fortune teller in the story is called "faithfulness", which is the crowning touch of this story), and he paid a price with his life. We should learn from it today.