20 postgraduate entrance examination, whose systematic class did I apply for? I have been talking with Pan Xin since March, and what Pan Xin said is very popular and very detailed. To tell the truth, listening to his class made me really realize the ease and fun of learning mathematics. Let's just say that I didn't feel any pain in the whole process of reviewing mathematics for the postgraduate entrance examination last year. On the contrary, I experienced the joy of learning. The more I listened to Pan Xin's classes, the more confident I became. After listening to Pan Xin's class, I practiced the real questions over the years by myself, and everything went smoothly. Finally, I arrived at the examination room. According to Pan Xin, problems are given priority and knowledge points are followed. I am very handy, and my single subject score in Math (Math II) is 13 1.