Of course, you can do anything except the library and dormitory without a card, hehe. Many people outside school bring their children to play on weekends. The scenery here is still good. You can come anytime. The campus of our headquarters Baoshan campus is relatively large, so we can take people as guides when we get to school as long as we are not busy. Just get off at Shanghai University Station on Line 7. If you don't live in Shanghai, no matter whether you come by train or plane, just take the subway and change to Line 7. I hope you have a pleasant trip.