I think math is actually more difficult, because I remember that when I participated in the competition, math problems were basically calculus problems, which were the first-year courses of higher mathematics universities, but I just couldn't get better, which was nothing more than friction, but these objects needed to be divided into several modules to solve, and different friction was the whole and part problem. Anyway, that's the main problem I encountered at that time. After all, it's a physics problem in senior three, and I still don't understand it.