Su Ling tells the princess that she has just swallowed her "exclusive poison" and that if she tells anyone about it, she will be killed. Su Ling says that she doesn't want to die yet, but she does want to know something only. She tells her that she heard that marquis Xiao hasn't slept well since he returned to the palace. He's in poor health, and he won't get revenge on her for betraying him, so he's going to need Su Ling's blood to get him better. The princess says that the palace is very tight, and if she were to kill her, she'd be unable to escape. She begs Su Ling to stop asking questions, and to just drink her blood. She asks if she has feelings for him, and the princess says she does, but that she's here to deliver the concubine. She's not there to deliver on the king's behalf, she says, but to deliver her own blood. The concubines blood is the key to getting rid of the "blood sucking monster" , the princess tells her. She says that if they separated them, they would be back to normal, and that's why they're still together. She claims that she didn't realize that this was going to happen, but now that she saw what was going on last night, she realizes that it's true. They can just