1, the number is different. The library in Xicheng District North has more books, rich books and many choices. However, there are few kinds of books in South Library, and the content categories of books are few.

2. The process is different. Xicheng District North Library has a good geographical location, a large flow of people and many readers. However, there are not many books in the South Library, resulting in a small number of people and a small flow.