I heard that some countries banned Bitcoin and 2 of them are China and Russia because the goverment think that Bitcoin deals are speculative, and the currency is always risky. But is it correct because there are a lof of Chinese use Bitcoin now?
I don't think so. The bitcoin was not banned, but it has just handled by two big governments (China and Russia) that is firstly investors of bitcoin. Actually, they have banned the bitcoin because there are many hackers that want to come in bitcoin system. So, the governments handled it until the troublers who made bitcoin risk calms down and turn back to the normal regulation.