The existing models are as follows: Jiageng Library and Chen Library are central libraries, among which Jiageng Library is a natural science library, which mainly provides natural science books and periodicals lending services; Chen Library is a social science library, which mainly provides lending services for social science books and periodicals. Both centers provide e-reading, public retrieval and consulting services. In addition, three specialized books and periodicals reading points, namely, aquatic biology, finance and navigation, distributed in relevant campuses, are reserved to provide readers with reading services and book return services for related specialized books and periodicals.