“One cannister of gas costs about 130 RMB/bottle/13KG (The service will pick it up and deliver it to your door—usually the next day. Tel: XXXXX)
The people come every day even during the holiday to collect the bottles on campus—usually in the afternoon. Just wave and they’ll take care of the rest. They will even deliver when you’re not home and come back for payment. Make sure your bottle is labelled clearly.
* Gas can be ordered by asking the gas man who wanders around the campus or by calling.