Distance education is independent enrollment in colleges and universities, and different schools charge different fees. Taking Zhengzhou University as an example, there are 2,600 undergraduate courses in literature and history, 0/900 undergraduate courses in normal universities, 3,000 undergraduate courses in pharmacy and civil engineering, 2,800 undergraduate courses in computer, 3,450 undergraduate courses in nursing and 3,900 undergraduate courses in basic medicine. But some schools are not so clear about this, only the tuition fees of all majors are the same, and some are professional books. ...