The next morning, Cai Lin is shocked to find that the corpse of a young woman has opened her eyes. She is nian xiping, a migrant worker from the nearby village of xiaogang. She was in a close relationship with a man from outside her school, and the man is the witness of the case who reported the murder. The two men were walking along the riverbank when the man stabbed nian. Cai Lin believes that the killer must have been a ghost, because the wound on nian's body is so close to her heart that she is unable to resist the knife.