Because the school belongs to a crowded place, students are exposed to coercion at the first time when they go back. Once there is a case in the school, it will spread rapidly.

If the epidemic situation is normalized, the most important thing for institutions is the satisfaction of parents. Previously, because of the epidemic, parents and students had to move online. On the surface, everyone's satisfaction with online courses is ok, but after the epidemic is normalized, everyone can go out to class, and parents' dissatisfaction with online courses may suddenly erupt.