I studied in Nanjing University for a few weeks. I brought my cheap folder.
I got a heavy chain + lock when I arrived. It came in handy when I went
shopping and going to parks. Even at the campus where I can sneak the bike
up my dorm; I just locked it up downstairs. Had a great time.
Ps, because my luggage was going over the weight limit - left my chain at
the campus bike parking. Hopefully it's still there(and works) when I go
back next year.