Indeed. Forewarned is forearmed. Going there with just 700 rmb seems lunacy to me.

I'd go with a credit card that could be used to buy a flight ticket home, or even better open round trip ticket with flexible dates, should the shit hit the fan.

Also bear in mind it may be one month before you get anything resembling a salary, and 700 won't last you at all, not if you want anything like a western quality of life.

But, I admire your sense of adventure. good luck and colds!