Without a library card, all the study rooms and reading rooms can swagger in.

You can't enter the library on the first floor without a library card. Other libraries can go in and read, but you can't take them away. If you take the book away, the security guard will take you away.

If you want to borrow books, you need to get a card, as long as the 50 yuan deposit (20 yuan card deposit and 30 yuan overtime detention deposit) is returned to you when you return the card.