The scene opens with a flashback to the previous day, when the teacher and the student are fighting. The teacher tries to stop the fight, but the student is too strong and hits the teacher in the head. The student tells the teacher that he thinks the fight is a mistake, and that the teacher should be punished for his mistake. He also tells the principal that the student, who is named Tangzhong, has come to him to tell him about the fight. The principal apologizes for the incident, and asks the student why he is so serious. He tells the student that he is worried about the teacher's health and that he has gone to a dinner party with three other students.