I heard the story of a student at West Point Military Academy in the United States. A button was missing from his clothes. About 50 meters from the dormitory to the classroom, seven people reminded him, "You are missing a button." Do you think this student has the courage not to correct it immediately? Of course, he should still be required by the etiquette norms of college students. And tell him that he is an adult and he must be responsible for his actions. If he goes his own way, his uncivilized behavior will be recorded in his personal file, and then see how he finds a job.