I guess the best answer to that question is of course a BIG NO! Granted, China is a big contributor for the rise and adoption of Bitcoin and they are primarily the country involved with Bitcoin mining due to very cheap electricity cost.
Now, the Chinese government has its own agenda and I think in the long run Bitcoin can be running against those agenda so they are now thinking of slowly disengaging and disconnecting their citizens away from the cryptocurrency platform.
I know that whatever China will decide on the impact can be heavy on the market and this is shown with the recent decision banning the ICO projects and the unconfirmed total ban of Bitcoin exchanges though it is still a rumor and nobody would want to confirm.
Can cryptocurrency still go on and have a very optimistic future even without China as part of the equation?
It's verry imposible right.....? In my oppinion bitcoin can't die because of china , because there are many another countries still use bitcoin such as america , japan ect. even now more and more bitcoin users and the price continues to increase.
It could have died but now with a lot of support bitcoin is back up. China did drop bitcoin very hard. Bitcoin lost 2k in his price, but after that it recoverd and it gained a lot of money in his price.
So in short i it is not dead but maybe if some other country will ban bitcoin like india bitcoin would suffer again.