You need to take your ID card to that tower. There is a specific time. There should be a time mark under that tower. You can have a look. In addition, the library is open from Tuesday to Sunday and closed on Monday. I didn't go in until I got a library card. I don't know if I can just go in. This card has two deposit forms: 100 and 200. 100 can borrow two books and 200 can borrow four books. You also need an ID card or household registration book to apply for a card. I hope it helps you.