The next day, Si wuyan wakes up and tells his sister that he has made an experiment without her blood. Si says that he tried to treat her as his sister, but that he cannot restrain his feelings for her. He tells her that if he had not been injured by the arrow, she would never have been injured. He says that it took him a lot of effort to keep her healthy and tender, but now she gets new scars for him. He asks her if she is hiding anything from him, and she says that she does not. She asks him why there is a missing piece of flesh, and he replies that he cut it off because he needed her flesh for the medicine. She says that although it is a sickening thought, it is kind of her flesh and blood that has mixed with her sister's. She tells him that she is willing to suffer, even her life, for her sister.