If you go to Songjiang Library, take Line 9 to the end and get off at Songjiang Xincheng Station. It only takes 10 minutes to walk there. You don't need to change buses. Look northwest when you get out of the subway station. That's Songjiang Central Park, right there.

As for why you came to Puxi Songjiang, I don't know. . . Songjiang is sparsely populated. There is a university town. Students study in their own schools. There should be fewer people here. I haven't been there, so I don't know I don't have a certificate. Even if I need documents, you don't need to borrow books. Show me your ID card.