In the meantime, lingjun and Luo junhao are working together to overthrow the government of Luo, and they're planning to send Luo back to her father, the empress, in order to get revenge on him for killing her father and usurping her father's throne. Worried that they'll be able to do so, Lingjun tells the emperor that he has a plan. He's the son of a former bai official, and he's also a spy who's been planted by the emperor's side to collect military intelligence from Luo. He says that his brother, junhan, is the one who killed his father, and that his plan was to imprison his father and then usurp the throne. Lingjun wants to know what happened when he came back to Luo to get the antidote for his poison. Luo tells him that he was poisoned by his brother , which is why he brought him back. He also says that when he received the letter from his father , he already knew about the whole thing. He wants to ask Lingjun to tell him the whole story, so he can go back to his brother and tell him what happened. He doesn't want the emperor and chunmei to find out about what happened between them, so they should just tell the princess that they need the antidote. Believing that the princess knows about their plan, they should tell her that the fifth prince is going to arrange a meeting between her and the prince who poisoned her. They should also tell her to give the antidote to the prince in exchange for her hand over . . They're not going to do that, they say, because both of them are "tricky" . The fifth prince will then arrange for someone else to meet the princess. The prince will arrange the meeting, and the princess will have to give up the antidote in return for the prince's hand in the matter.