Brother Yao, I am also a junior college student this year. I have never been exposed to advanced mathematics at all. It's a little hard to read Tianyi's textbooks now. Can it be done in two to three months? Generally, the candidates who graduated from junior college did not finish the advanced mathematics, and they all slowly understood and reviewed it themselves. So don't be too negative. If you want to improve your grades quickly in a short period of time, it is definitely beneficial to sign up for a training class if economic conditions permit. I hope you can successfully get into the ideal two books! !