I've played China (C3C) three times. Once at Chieftain I won Domination. The other two at Warlord (one Small map, one Standard) I ended up retiring from once it became apparent there was no path to victory. I'm about to try again on a Tiny map. I don't remember much about one of the losses, but the other one just happened recently, and it was largely due to a resource-poor world; literally the only resource I had was furs, and only after I culture-flipped an Arabian town (which ended up being traded a couple times between me and the Netherlands). So ... any China-specific suggestions that might help?