There is a movie in which the protagonist's father is a hero. The protagonist got sick when he was a child. His father stole the prince's child and became the pearl of the night.

Nine princes (decorated by Ma Jun) have been allergic to pollen for many years, and suddenly one day someone sent a rare treasure-Wen Liangyu. Nine princes were completely ill. However, the good times did not last long, and this Wang Yefu, who was heavily guarded by Kuang Shizhen, disappeared. This is simply breaking ground in the traditional era. The angry nine princes were almost mad. His wife, Yan (), asked a natural Taoist to pinch her fingers for divination. The conclusion is that the perpetrators are Liu and Zhao, famous martial arts families in Beijing. That night, the officers and men beheaded Liu and Zhao, but their minor sons escaped. Many years later, due to the torture of pollen allergy and the frequent harassment of assassins, the elderly nine princes had to live in underground palaces. Liu Yijun, a descendant of the Liu family, failed in assassination, and it was at stake. Guan Jian was always saved by Zhao, the legendary escort of Zhao. One day, the prince was arranged to ride a horse in the suburbs of Beijing. After hearing the news, Liu and Zhao went to take revenge as planned. ......