The law was made for man, not man for the law!
I imagine it is probably very illegal for tourists to ride motorcycles in China, but when I was there I found that the cops either didn't want to mess with it, or that the law left some wiggle room for wily foreigners.
There was talk about China accepting international driver permits in preparation for the olympics. I think that maybe Beijing said to all the local police stations "If you catch a foreigner and he has a permit let it slide."
Chris Maupin
www.chrison2wheels.com