In fact, from a technical point of view, the role of mathematics in engineering application is not great! Including design, mathematics is very important if it is studied as the basic theory of architectural works. If you just graduate from college and take the postgraduate entrance examination for re-employment or direct employment, this problem is not very big, but it will be more difficult when you take the postgraduate entrance examination! But you're going to study for a Ph.D. and do scientific research, and you're going to strengthen math later!