When xiaoli tells his father that he wants to learn to use a sword, his father tells him that his son is not his son. He says that the emperor likes his son very much and that he will not take his son away from him. Worried that the news of his son's desire for a sword will upset the emperor, Pearl discovers that his new wooden sword has just arrived at the Protectorate camp of Lin'an prefecture. He is shocked to learn that a group of soldiers has attacked and killed dozens of other soldiers, and that the soldiers lost their minds and went insane.