1. As far as classes are concerned, there are no fixed classrooms in universities. Because universities implement the principle of small class system, the number of students enrolled is generally large, generally there are nearly a thousand or more classes, and the resources of school classrooms are limited, so it is impossible to arrange fixed classrooms for students in each class.

2. As far as courses are concerned, there are fixed classrooms and universities implement shift system. The classroom corresponding to each course is fixed and generally will not change within a teaching cycle.