We've run into similar issues regarding the Chinese being restricted in spending their currency outside their borders (for an entirely different business opportunity). After some thinking, I came to the conclusion that you need to get a domestic exchange going in China and people like yourself need to start using Bitcoin to buy things from the Chinese (so they can obtain more Bitcoin to use on their local exchanges). Since Chinese currency isn't very usable outside China, it's unlikely that many people outside China will offer to sell Bitcoins in exchange for Yuan (but maybe speculators will). So, you need domestic sellers of Bitcoin and for their to be sellers, they need to have Bitcoins to sell.
You don't need to worry about having local btc sellers. People looking for arbitrage opportunities will do the job of moving bitcoins in or out of China as necessary.
I think there would also be benefits in such an exchange to currency traders that might want trade Yuan against other currencies. They could sell dollars for bitcoins, send the bitcoins to the Chinese bitcoin exchange, and sell the bitcoins for Yuan to hold in their account. Then reverse that trade as they see fit. Given there there are such strict controls on trading Yuan for other currencies on the free market, I bet you could make a fortune doing it if you could do it in large enough quantities…you buy Yuan after interventions force the exchange rate back in line with the USD, then sell as it rises and in advance of another intervention.
Thanks! 
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