I think competition is more difficult than postgraduate entrance examination. Because the skill of the competition is very strong, so few people take the exam, and the level is high, mainly depending on the skill application ability. Mathematics for postgraduate entrance examination is a combination of foundation and skills, and there is a reasonable proportion between them, so the difficulty is lower than that of mathematics for competition. If you take the mathematics of the competition as the postgraduate mathematics, I don't think many people can pass it.