It is said that the dean does not believe in corporal punishment of students. He only has two punishments for students who make mistakes: physical labor or solitary confinement. Solitary confinement refers to locking a student who has made a mistake in a small, dark room of less than three square meters with no windows, no lights, and no sound to reflect on their actions. Undoubtedly, solitary confinement is a punishment for students who have committed serious offenses. Don't underestimate this seemingly insignificant punishment; no matter how temperamental or difficult a student is, once they experience it, they immediately become obedient. They would rather be punished by cleaning toilets for a month or tidying the entire college than be placed in solitary confinement. As the teacher

