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?
No, Russia has not regulated bitcoin. In where have you read that bullshit?
Just China tried to regulate it as much as they could, but they are never going to stop the usage of bitcoin, because how can they know who is really "using" it? Are you dumb?