The second prince, who had been away from the court for many years, was falsely accused of massacring the people. The people who did not know the truth were panicked and wanted the emperor to get rid of the second prince for peace.
The emperor had no choice but to recall the second prince who was far away in the border area. However, when the second prince returned to Beijing, he was seriously injured on the head by the rioting people and unfortunately lost part of his memory.
Purpose: There is no justice in the court