Shao Feng is average, but Li Yongle and Huang Xianfan represent scalpers, so they suggest sailing.
In addition, I'd like to recommend Mr. Yu Shu from Bourne to you. His mathematical thinking is very close to the propositional style of these two years. I took the exam in 2009 and got in. Now waiting for school to start.
Please let me know if you have any questions. I bought all the math books in the bookstore last year. I'm a little ...
Wendeng Chen's time is over. If you don't believe me, you can try the experience of others in the forum. I dare not do only Li Yongle's 400 questions later, or I will die miserably.