Often stuff like this precedes active government action to curtail said activities
It does however mean that "the word is out".
And peeps here do love anything that allows them to bypass restrictions
I doubt the Chinese government will crack down on bitcoin for a while - if anything they will look for an economic advantage.
It depends on how Chinese people use it. If they start using it to move money out of China into alternative, anonymous safe havens, there may be a problem. But it's still much too small to worry the Chinese Government.
The Chinese people, on the other hand, will definitely use it once they see it's potential - if only to diversify their savings outside of the Chinese governments control.
(I live in Shanghai)