I will have the opportunity to teach for six weeks in China this December/January. I'm not sure which Chinese university yet as we have agreements with a few schools so I realize that responses to me must be very general.

I'm thinking that having a bike there will be convenient and will give me great opportunities to explore. A folding bike will give me the best bike security because I can take it with me everywhere.

For those who know, am I better off buying and bringing it with me or should I buy it once in China? (Cost, taxes, etc.)
I presume that theft is universal so extra security tips will be appreciated.

I'm really partial to Brompton. Are they easily available there? Any quality Chinese folders that I wouldn't be very familiar with in the USA? I am also going to look for a Flying Pidgeon if they're still being made just to have a unique bike.

Thank you.