Borrow books from the National Library of China and take them home to see if there is a deadline for returning them.
Just get a library card with your ID card (common to all libraries in Shenzhen). If you want to borrow it, you need to divide it into 50 yuan, 100 yuan, and 300 yuan will recharge it. 50 yuan borrowed two books, 100 yuan for five books. You can borrow foreign documents for 300 yuan! There is generally no charge for borrowing books within 30 days. More than a certain borrowing fee! I can borrow and return books through the library's automatic lending system, which is very simple. If you have a hint, just put it on and sweep it. You'd better keep the receipt. ...