First it will not Happen, Keep in mind that china is a big country and one innovating class country, what do you think happen in their economic status if they shut down there connection to the other world, what will happen to their country after that. They will lose their path/way to improve and develop more. When it regard to Bitcoin i believe they can easily erase it to many people even using their so called censorship works. Many of them know the potential of bitcoin in their country and to their improvement shutting it down totally can lead them to lost.
Read what I said above what you posted. You are one of those I obviously was speaking to directly when I said that people like you have no idea how easy China can censor any/all info on any topic they choose without affecting any other businesses. They do it already. They ban Google. They ban Facebook. The only people that know that these sites exist are those that have left the country or know someone who has done so.
You people think China stands to lose by banning BTC. WRONG. They stand to gain billions in capital that is otherwise going abroad as I type this. DAILY.
Banning bitcoin would definitely mean for the Chinese government a good thing. However, if doing so requires shutting down all internet connection essentially for every single citizen, then the whole thing is unfeasible.
Plus, banning google's servers using the great firewall is way easier than banning an entire distributed network with thousands of nodes operating worldwide. How that is even possible, i don't know. They could officially state that bitcoin ownership and use is outlawed, but that wouldn't be enforceable.