The number of students in general colleges and universities is measured by "ten thousand", with a large student base and many resident students. Compared with senior three students, college students have also increased the pressure of epidemic prevention and control in dormitory.

Classes in colleges and universities are basically dominated by lecture halls, and hundreds of people attend classes at the same time, so it is difficult to achieve a single table. Friends who have had college experience know that a large number of students go to college to eat, which will definitely lead to crowded people, and it is basically impossible to keep the dining distance.

Various prevention and control measures are under great pressure, such as classrooms, libraries, restaurants, playgrounds, dormitories and other places where people are crowded.