The topic of English composition is the sale of second-hand books on campus.

Nowadays, the sale of used books is popular on campus. It's good for book sellers and book buyers. Because books are very expensive, it is difficult for many students to buy new books, especially those from ordinary working-class families. However, they have to buy books because they want to study, and the books in the library can't meet their needs in many cases. In this case, it is a happy thing for them to spend 30% of the original price on a book they like. For book sellers, it is also a good way to generate extra income by selling books that they think will never be used again. Especially those students who need to move to other cities after graduation, it is meaningless to transport old books to new cities, because the freight may be as high as the cost of buying new books.

Therefore, the second-hand market is a suitable place, and the problems of buyers and sellers can be solved through book trading, which is why it is becoming more and more popular on campus. I like books, and I love the second-hand book market. Visiting second-hand bookstores is my hobby and I like it very much. I buy second-hand books, but I seldom keep them because I don't have enough space. So whenever I finish reading a book, I will sell it back to the second-hand bookstore, at a lower price, of course. I avoided buying new books and saved a lot of money.