Looks like this is just a way to get more dollars/euros etc. As processing power to mine will be produced more cheaply in China as are many goods it becomes a profitable export industry like semiconductors or any other real product produced in China. This is a net gain for them. This isn't much different than the trade of any other goods. The China government policy is to extract resources through a favorable balance of trade. We will likely have a stagnation in the BTC price as production shifts to China with an associated lowering of cost without a proportional increase in demand.