Postgraduate entrance examination is not about IQ, but more importantly, hard work. Postgraduate entrance examination requires self-discipline and persistent study in a planned way. About how to practice advanced math problems, I suggest reading the book roughly for about 30 days. Take a closer look, combine the exam questions and other postgraduate apps, do questions for the test sites in each chapter, analyze the answer ideas, and review the time 1 month and a half. Then do 1 month questions, and finally do 2-3 sets of real questions according to the test time.