The emperor asked Yongqi Erkang what happened when Princess Xiang was robbed.

The emperor asked Yong Qierkang that the princess was robbed because the emperor learned that Yong Qierkang had forged the imperial edict and robbed the prison. He was furious and wanted to put them to death.

The play tells the story of Xia Ziwei, the daughter of Qianlong, who went to Beijing to meet her long-lost father. When she was desperate, she met the female snitch Swallow and became sisters. Swallow managed to enter the palace for her, but she mistakenly changed her identity with Xia Ziwei and became the "Pearl Princess" of the Qing Dynasty, which was deeply loved by Qianlong.

Among them, Swallow is a poor orphan living in Beijing. She earns a living by performing acrobatics. She is quaint, a little clever, chivalrous and courageous, and loves to be attacked. By chance, she met Xia Ziwei and became her Jin Lan sister. Later, due to a series of misunderstandings, the swallow was mistaken for his illegitimate daughter by Emperor Qianlong and was named Princess Zhu Huan. Later, she fell in love with Yongqi and became the daughter-in-law of the royal family.