Hello, I'm from South China University of Technology. Our school library can only be accessed by documentary evidence. Only freshmen can enter with a one-card when they first enter school (one-card can't be used after unified library card handling). Our library card can enter the libraries of South China Agricultural University and South China Normal University. Some schools don't have any cards, such as Sun Yat-sen University. Hehe, that's all I know. I hope I can help you.