Young Liu Jin entered the palace by castration, attached to eunuch Liu, changed his surname to Liu, and became an ordinary official in the palace. Ever since Zhu Houzhao, the prince he served, became emperor, he has used cunning and tactful means to do whatever he wants, encouraging Wu Zong to covet pleasure and hate affairs, encouraging Wu Zong to hit the ball, let eagles chase dogs, crouch in zaju, and even wandering in brothels, raping good women, winning Wu Zong's heart, thus taking power and manipulating state affairs.

After Liu Jinquan surrendered to the imperial court, he rejected dissidents, recruited henchmen, formed a clique for personal gain and betrayed traitors. Fifty-three ministers who opposed him were classified as traitors, creating a "traitor" unjust case. He invented a torture device-cangue, which was worn around the neck of an official. Many ministers were sentenced to 75 kilograms of cangue and hanged alive for violating Liu Jin. Conspiracy to abolish legislation with ulterior motives. Just as he was hiding weapons and plotting evil, Wu Zong ordered Liu Jin to be dismembered in the street!