It's not difficult, but it depends on which major you choose. Mathematics is divided into professional mathematics and public mathematics. Public mathematics is divided into first place (computer and engineering), second place (science and engineering), third place (economic management) and fourth place (liberal arts mathematics). The truth is difficult to count.

For non-physics majors, physics is not difficult.

In fact, the mathematics and science subjects in universities are not difficult for students who have experienced the college entrance examination, because the exams in universities do not far exceed the textbooks as in high schools. In college, it's basically the difficult questions at the back of the book. That is to say, if you listen to the class well, study hard every day and do your homework on time, you can basically pass 80 points.