This question is bullshit i think.China announced ban ICO that's why many people tried to quickly sell Bitcoin but it's their wrong decision.Now Bitcoin is again raising.Bitcoin is not destroy i believe.
China wants hold bitcoin in his hands and all they wanted to do is to take control on the price of bitcoin as they are failed now they will ask to rejoin and say that they will accept bitcoin again but the thing is bitcoin region. Bitcoin proved that china is nothing, and in future there will be bitcoin everywhere and then Chinese will beg for rejoin.
Again with the China conspiracies ...
China doesn't want to control bitcoin. They don't give a damn about bitcoin.
What they do care is the cashflow in and out of the country.
This is their goal, to protect their fixed and fake exchange rate for the yuan and to keep the money in China, especially money that would end up in US. They wanted to get control over the exchanges to see who is buying coins, they don't mind what you're going to do with those coins but they want to know how much you put in there.
They have lost about 1 trillion in the last two years in capital outflow.So they want to make sure nothing leaves without them knowing.