It's been a long time since the teacher left school, and he hasn't been home since then. He's in the middle of a traffic accident. The nearest hospital is three or four miles away, but the teacher doesn't want to go there because he's worried about a student named "cheng mu" who was involved in the accident. He wants to know why the driver of the truck kept his phone turned into a car accident, and why he didn't call for help. The teacher is so upset that he starts to cry, but he can't stop laughing at him. He says that there are so many people in the area that they don't see his face, but they can see him crying. He tells the teacher to stop laughing, and says that he'll be fine.