Before the opening of the second phase of the first picture, 50 yuan paid a deposit to borrow three books for three weeks, and online or telephone can be limited once;
Borrow five books, deposit 100, and the time is also three weeks. You can set the deadline online or by phone.
Now the second phase is open. I have a library card of 100 yuan. Now I can upgrade and borrow ten books for free. The time and deadline are the same as before.
20 cents a day for returning overdue books.