The average Chinese citizen earns $865 per year vs 33k for the states.
That figure of $865 per year probably includes itinerant non-skilled workers in calculating that average. Those in professional jobs earn on average 5000 RMB per month .. that's about $735 per month. Still a lot less than the average US monthly wage, but then again, cost of living in China is no way as high as that in the US.