Which tutor should CUHK choose for computational mathematics? By the way, can I change my direction when I study at the Chinese University of Science and Technology? For example, from computational mathematics to probability theory The teachers in HKUST are actually quite good, and the teachers in the department of mathematics are generally good. To say which is better, you can check their research experience and papers, hehe.

In principle, it is ok to change direction, as long as the current tutor agrees, there will be a tutor who is willing to accept you after changing direction. Generally speaking, however, it is not recommended to change direction. Comparing changing directions often means that a lot of work done before becomes meaningless. If you change directions for no reason, it is easy to give the tutor a feeling of distrust. Therefore, if there is no special reason, try to consider carefully when choosing a direction at first, and avoid changing directions or changing tutors.