2. The first type of undergraduate usually refers to national key universities, undergraduate colleges that entered the 2 1 1 project, other subordinate universities and provincial key undergraduate colleges designated by provinces, commonly known as a book, and the marked scores are called a line, also called a key line.

3. The second category is the general undergraduate course for national enrollment, which is one grade lower than the first category, commonly known as two books, and was admitted in the second batch.

4. The third category of undergraduate courses refers to private undergraduate courses, and there are also some independent colleges under key universities, mainly for enrollment in the province. It is the lowest undergraduate college. Most of these schools are upgraded from the original colleges, commonly known as the three colleges.

Most of these schools are upgraded from the original colleges, commonly known as three books. The tuition fee for one book is similar to that for two books. According to the subtle differences between schools, the better the university, the lower the fees. Three books belong to high-priced students. In addition to tuition, the admission scores are different: the highest in one, the second in two and the lowest in three.