In fact, it has been like this every year since I took the math exam online in recent years, and I feel "complaining everywhere". Mathematics for postgraduate entrance examination is the most difficult and polarized among several public subjects. No matter how difficult it is, there are full marks (150), and no matter how simple it is, there are many students who can't cross the line.
Therefore, if you can score about 60 points, you will definitely have no problem crossing the national line. Out of 150, I think 60 points is not difficult. Just review, even if you just do all the real questions.