It is wrong to smoke in the library. First of all, smoking in the library is uncivilized. Secondly, because there are many books in the library, it can be said that it is illegal to bring in any inflammable and explosive articles. And if you smoke in the toilet, it will affect other readers' reading. Of course you have the right to smoke, but the library also has the obligation to maintain a good reading environment for other readers. On the other hand, admit a fine. You don't have to come to the library, but you have to behave yourself when you come.