Till January, 2017 China's share of bitcoin market equaled to almost 95 per cent. After the government took measures the share dropped to 10-15 per cent. However, right now a lot of articles are being issued predicting China to remain the leader. How's it possible?
I don't know what articles have you read, but I seriously doubt that China is still the leader. As you have said it significantly dropped. And with the government crackdown there's no way that there's still the leader as of today. Japan and South Korea has taken the lead already. And if you still thinks that China is still on top. Just read this:
https://www.coindesk.com/closing-cryptocurrency-exchanges-was-the-right-move-says-pboc-official/The only way for China to remain on top is if the Chinese government would allow or at least be lenient with their local exchanges. Unfortunately, they have spoken so there's no doubt that they can't go back anytime soon. Also I've been speculating that bitcoin mining farms would be the next, but I maybe wrong.