According to the regulations, if you don't return the book after half a year, you will automatically cancel the borrowing right. If there is any trouble in this respect, the service desk will definitely explain it when renewing the fee. If there are books in the real edition, there are two ways: one is to return the books and pay a late fee (20 cents per book per day); The second is the compensation book (the same as the original copyright version), or compensation according to the compensation regulations (it seems to be at least five times the marked price).