I studied business administration in Japan, which belongs to the category of business. High school math is ok. If you need to study accounting and statistics, you still need a little math foundation. However, even if you are not good at math, you can understand and do problems as long as you go. There is no particularly great pressure. Some basic things abroad have been learned in China, but it may be difficult to accept them in English at first, and some formulas will be used differently.