The biggest difference between university teachers and high school teachers is that university teachers have no pressure on students' enrollment rate. They only need to go to the classroom on time every day to teach students fixed content, and then manage students according to the requirements of the school, which has great autonomy. The pressure faced by college students comes from CET-4 and CET-6, Putonghua test, teacher qualification examination, postgraduate entrance examination and so on. Teachers give little help to students in these aspects. Even if students don't attend classes or go to classrooms, university teachers won't pay attention. In this case, students still don't have to worry that the teacher will fail this course, because the teacher will give a particularly high score, and then focus on the final period to ensure that the students can pass. The university teacher doesn't even know who the students are.