Simple fix: don't allow the Chinese to play WoW. Dont offer it to China.
While I get that that is alienating a portion of the community, China really doesnt care. There laws ensure they have no accountability in anything they do. And honsetly, Gold Farming is ruining the game for people who pay for it, as well as the other ways they attain gold (Credit card farming is also common).
The fact that the government forces people to do manual labor THAN this, for profit, sickens me. They have no respect for the individual- which is a value I'd love to instill upon the leaders who allow this by subjecting them to the same torment. But thats my personal believes, and a bit of a tangent from the original point.