In the spring of the fifty-fourth year of Kaiyuan, the founding emperor of the Yan Dynasty passed away, the crown prince was not established, powerful ministers were rampant, eunuchs were in power, the emperor's nine sons were regents, and wars broke out in various kingdoms. The seventh son of the emperor, King Huainan, and the fourth son of the emperor, King Minnan, raised troops in the southeast and invaded Luoyang with the force of a flat river. They combined the military power of Xu and Liu to march into Chang'an. Kill the treacherous ministers and establish the outline of the court.
In the winter of the 54th year of Kaiyuan, the seventh son of the emperor ascended the throne and was named Ming Sheng; the fourth son of the emperor was named King Huaining and given the fiefdom of Huainan; Xu and Liu were granted military power and were stationed in Luoyang and Jinyang respectively.
In the early years of the Ming Dynasty, the country was peaceful and the people were safe, and the country was prosperous. However, the tranquility of the imperial court and the side streets was like the tip of the iceberg, but in fact it seemed that more disputes were hidden.