The origin of dormitory slogan

in order not to be disturbed. Many college students will "put up slogans" on the door of the dormitory, mainly because there are always salesmen in it, which affects students' study and rest in the dormitory. In order not to be disturbed, students put up slogans. Students spend most of their time in the dormitory, so the "slogan" on the door of the university dormitory has become a beautiful landscape on campus.