The library of Zhejiang University is open to the outside world, and students (social workers) are not allowed to borrow it. However, you need to apply for a library card of Zhejiang University Library, which is free of charge (except the fee). After you have a good library card, you can enter the libraries of various campuses of Zhejiang University, where direct reading is free. If you want to borrow it, you need to charge a certain fee.