That is great, that they are unaffected.
Best Idea is to get an account setup with 'Ken" over at
https://anxbtc.comHe runs a clean government registered exchange in Hong Kong and complies with all the applicable business registration rules.
I would expect that when they cannot change the BTC back to US/RMB in China (yep I know you can do deals on the 'street' the problem is validating the RMB bills are not fake) they will go to the first applicable exchange available where they can physically draw the cash out within a day or so. (it's an Ideal day trip)
It may be worth looking at some purchases when the lows start to come out.
RF