Does anyone have any experience with trying to connect to the China Mobile hotspot/WLAN service? I seem to be getting good signal (CMCC) in my room, and it only costs 70 RMB for a week (vs. 60 RMB per day for the hotel).

I can read some Chinese, and it seems like I need some kind of mobile number. However, I can't tell how to enrolled or how it's actually charged. Would it suffice if I borrow someone's mobile phone number, or would the bill be actually charged to their account?

I also see a ChinaUnicom network, which seems to be free to subscriber.