Their ban was powerful, made bitcoin dumped to 3000 usd, but now it is 3700 usd again. They can't prevent the future.
Of course the Bitcoin market will not be collapsed by Chinese people and I'm sure if China disappeared then the cryptoucurrency market will probably be more stable and will have a good future development path.
its true bitcoin had a great power in cryptocurrency. and i think china cant ban ico forever cause china need blockchain in their economy and this is the revolution technology that need to be apply to all things in our live especially in business. so i believe there will be time where all of people understand blockchain and apperciate cryptocurrency as trade item.
I dont know man, china even bans winnie the pooh just because somebody said the minister looked like him lol