I think Michael has the right of it and is bang on in his descriptions. The only other negative I can offer about China, is the obsession with cars. Pavements are often blocked by cars and the driving is certainly not to the standard we see in the West - the Chinese seem to worship cars above everything else. He is right about the Internet, and I find that a frustration, but then again it's not a show stopper
As far as safety goes, I feel very safe, lack of freedom is a myth that gets perpetrated in the West and of course the food is fantastic and relatively cheap.
China is a wonderful country and having lived here, on and off, for the last 12 years I love the place, though as my wife is Chinese and I guess I see it in a different way to the average tourist