Just now... China has declared a halt to Bitcoins exchange and operations by October... The price of Bitcoins has partially drop due to the news... However, if we can equal the population of Bitcoins user in China and invite a lot of investors... I think Bitcoin will still survive.... Hope so....
I think they can't halt exchange because a big part of the china is growing with the cryptocurrency earnings .
Here personally i myself never think in negative way about this news when it comes official by the china government .
You can take example of the big economy in this world where they accepted bitcoin offically with better amount of the tax .
So here I don't think china will take action against the bitcoin or any other cryptocurrency .
If it will happen then i am sure market will go down for one month only because bitcoin is not only use by the people of the china .
And also here we should see that there are many countries who are still observing the bitcoin and making news rules that how to regulate in perfect way , so may be things will go in favour of the cryptocurrency user .