I just took the postgraduate entrance examination in 2012 and took the full course of Political Science and English in Haitian. A little bit of my feelings, I hope it will be helpful to you~
Among the mathematics teachers, the teaching styles of Teacher Zhang Wei and Teacher Yang Chao are humorous, easy to understand and analytical. In their words, there is no " "Pure," and they are very responsible. They often say, "Don't worry about memorizing. The important thing is to understand." "You must tell me in class." Instead of using PPT and the like, they use a writing board to write on the blackboard and cast it on the big screen. After class, you can interact with them through Sina Weibo and ask them any questions you have.
The most important point is that Teacher Zhang Wei will mark papers at Peking University for students who go to Beijing to take exams. Taking his class will let you know how they mark papers and some things that can increase your ability to improve your ability to take the incomplete exam. If you know it or don't know it at all, you can gain a few extra points. If you go to Beijing to take the exam, you should take his class.