Jim Grant mentions a way to play this is by holding Treasury Wine Estates. It's an Australian wine producer that's been hurt by the strong AUD. The thesis is that if China slows down it will drag down the AUD and TWE will start to report record profits. Sales are mainly to AU (so no effect of currency there, maybe demand though), US, and Europe (lower AUD nice tailwind).
The thesis is interesting, too many moving parts for me to invest on that alone. I do own TWE but purchased for entirely different reasons (spin-off, selling below book, selling for 1/4 of replacement cost), but if the AUD weakened from China I'd take that as well.