You don't need any documents to go to the study area on the fourth floor of Tianjin Library. If you want to borrow books or read books on the sky map, you need to apply for a library card. China library card is 75, of which 50 is the deposit, which will be taken back when the card is returned. Annual fee 15 yuan, and 10 yuan is the production fee. It seems that the study area doesn't open until 1: 30 on Monday, and the rest of the time is 8: 00. Children who love to learn, work hard!