That is to say, the major and direction examination you apply for are these three subjects. Politics, English and the number three. These are the names of three exams. It's like you took the English language mathematics in the middle school entrance examination and the political English mathematics in the postgraduate entrance examination. Then introduce the admissions brochure, and there will be a recommended bibliography below. Just buy books according to the number of books in this direction you choose. But books on mathematics, English and other subjects are not the focus. Crazy sea tactics, hard work is king!