CUHK's math major is still under great pressure. If you think it's acceptable, I think this major is quite training. . . It is almost impossible to make a surprise attack in the CUHK Mathematics Department, and it is difficult to get high marks. However, many times grades depend on the teacher. If you have a good relationship with the teacher, you can still get high marks, because in CUHK, your grades usually account for a large proportion. Please, I'm from another school in CUHK, but there are also many students in the Department of Mathematics.