Most schools don't interfere too much.
Now universities are generally open, and schools are generally not closed to the outside world. As long as the school is not closed, people outside the school can go in and out, and it is possible to skip classes across schools and regions. Of course, under special circumstances, people outside the school cannot enter the university campus:
Special historical period. For example, during the epidemic this year, all schools were closed and outsiders were not allowed to enter at will;
Special management of special schools. For example, Xiamen University, a tourist attraction, does not allow outsiders to enter the university without permission. There is also the South University of Science and Technology, which implements semi-militarized management and cannot enter and leave at will; In addition, Wuhan University is not allowed to enter the cherry blossom season every year.
In addition to the above special circumstances, outsiders are relatively free to enter the university, which means that the university does not interfere too much with ordinary courses, so it is possible to skip classes.
The teacher has no objection to the students coming to class.
As early as 1998, before the expansion of colleges and universities, elite education was implemented in colleges and universities in China. At that time, students were very enthusiastic about learning, and no one wanted to skip class. However, since the enrollment expansion of 1998, higher education has become popular, and some ordinary people can also go to college for further study. Everyone has a big forest, which leads to a small number of students often skipping classes.
Since skipping classes, the teacher's biggest headache is the lack of people in class. Occasionally, if there are too many people in class, the teacher will not interfere (of course, if you disturb the class order, the teacher will still take care of it). On the contrary, there are more students in the class, and the teacher is quite happy. At least, his teaching level has been recognized by students and his work has been respected. Many teachers will think that these absentees are attracted by students from other majors in the school, but teachers have a great sense of accomplishment.
Conclusion: As long as you want to learn knowledge and don't disturb the basic teaching order of the school, generally speaking, you won't be disturbed too much when you skip classes on the university campus. However, if some courses are tuition-based courses, such as postgraduate training and judicial examination training courses, and these costs are not low, these are not suitable for skipping classes. If you really want to attend these courses, you'd better pay the fees honestly.