In the thirty-third year of Jiayong, the Xiongnu and barbarians outside the customs jointly invaded the border. The foreign enemy was approaching fiercely, and the border defense was temporarily lost. Emperor Jiayong quickly sent out his own bodyguard troops for support. Unexpectedly, the vassal kings who had been keeping their peace would join forces to rebel at this time. There were only 3,000 defenders left around Emperor Kayong, who were no match for the 100,000 soldiers of the feudal lord. He could only escape from the palace in panic.