Correct me if I am mistaken but it was you and Tecate who introduced a 51% attack in recent posts?
Ok, I will correct you. The discussion about a 51% attack was introduced way back in thread. It was in the context of a 51% that tecate made his comment about attacks on miners, at least that is how I interpreted it. You appear to have interpreted it that s/he was talking about any sort of attack at all.
You confirm it here
51% attack of the Network is entirely different to what the Chinese government are doing
So can the Chinese shutdown mining operations, yes of course. Same way they could shutdown their airports and disrupt international airline traffic network.