As everyone knows, Jiang Qingyu, the fourth son of the North Palace, is a sick man, who lies on the bed for nine hours a day, sleeps when the sun sets, and does not get up until three poles in the morning. He doesn't study literature, doesn't practice martial arts, and doesn't go to the Qinglou to listen to music, so he is also nicknamed "Wolong Gongzi". However, no one knows that people can actually practice in their dreams. …… One night, Jiang Qingyu fell asleep on the couch in the palace. At the same time, in the capital thousands of miles away, some people reported to the official, claiming to have seen the prince of Wolong kill a ten-zhang high golden dragon with a sword! At the moment of the dragon's fall, the capital Qintianjian watched the sky at night, and saw Xuanwu devouring crape myrtle, and the thousand-year-old luck of the Chu State was lost eighty percent overnight! On the second day, an urgent report appeared in the court of the Chu State. There are only four words on the urgent report: Reject the king of the north.