0.2 yuan. Books cannot be renewed after the return date. You need to take your reader's card and books to the library to renew them. If the loan is overdue for one day, 0.2 yuan overdue fee will be incurred, which shall not exceed 10 yuan, and the loan procedures will not be affected. You can't borrow more than 10 yuan. Please go through the relevant formalities at the book lending office and pay the overdue fee before borrowing.