Hello, dear, let me check for you. There is no self-service library in Cheng County at present. Self-service library means that readers can borrow books, return books, apply for library cards and enjoy the pre-lending and delivery services of the library without visiting the library in person and being restricted by the opening and closing time of the library. Self-service library is equipped with bookshelves, return boxes and computer consoles, which can store hundreds of books and adopt self-help mode.