Generally divided into three categories: books, audio-visual and movies. Among them, books are divided into six categories: China novels, foreign novels, computers, family health care, life and leisure, and stock funds. Audio-visual is divided into six categories: musical scenery, foreign classics, foreign light music, drama and opera, national musical instruments and children's music. Movies are divided into six categories: series, popular science education, children's stories, fitness, feature films and game software. Generally speaking, they are classified like this.
There are thousands of books in the library. If you put them all together, it's really looking for a needle in a haystack to find a book. Book classification is an important basic work of the library. With it, readers can "find books by classification".