I don't even understand why this is taken as bad news, its just neutral. Banks can't trade in bitcoins or take out insurance against them, hardly surprising. Individuals can do what they want but they accept the risk.
This is no change to how the rest of the world is working with Bitcoins. I'm surprised if any Chinese banks have invested in Bitcoins heavily anyway.
I think the catch is that China will now become even more of a USD black hole.
People with big positions in China are probably on "RECALCULATING..." mode.