Hey Michael, I'm in China too, Henan province to be exact.
I haven't played ARMA2 in a month but when I did I was able to connect to a couple of servers from here with a half decent ping (75-150) there were also some from Hong Kong, Japan and Korea that were no problem to play on.
I'm busy with my newborn at the moment but in a month or so (if your still in China) when things have quietened down a bit for me I'd be very interested in playing through some missions online with you.
Good luck anyway:)