In the sixth year of Fengchen, the current emperor Feng Yi was weak and incompetent, and was usurped by his half-brother Hua Yuncheng. Huayuncheng, who ascended the throne in the same year, changed his reign to Longxuan and his emperor to Emperor Yunlong. From then on, Emperor Fengyi ended his six-year rule.
In the first year of Longxuan, in a town in the southwest of Zhangyun Kingdom, a fire broke out in the mansion of Yu Qinglian, the minister who had returned home. People who were supposed to be sleeping were awakened by the fire. The young master of the Yu family escaped and vowed to take revenge. But when he went to the capital to seek refuge, he met the current emperor who was taking his concubine back to the palace.