The fourth brother, Biyuan, tells the king that chenying, the woman from the brothel, has come to report to him that the grand master, liang, has given her a hairpin of fine jade and a set of exquisite jade pendants. Biyuan also says that the scent of the herb yue smanthus is similar to that of the elder sister, who is also a prostitute. The king asks for an investigation into the matter, but Biyuan tells him that he has resolved the issue. He says that he is now trying to frame him with the prince, and that the prince has been trying to shake him off all of his responsibilities. The civilian says that she is the secret agent of the kingdom of xia, and the king cannot count on her words. She says that her parents and siblings have been harmed by the xia army, and she hates them all. She recites the secret letter to the king in her hands, and he cannot believe her.