china is not controlling bitcoins .they are investing lots of money to get hold of bitcoins ,its the basic they can do and they think that whoever has the most bitcoins will be the most powerful .just it is thats all..
China has a population of BILLIONS, so that's not something impressive in my opinion. This is why they control most part of the mining: they are so many, so there are obviously more Bitcoin users there. What I'm curious about is what happens when the BTC left to be mined will reach under 1.000.000BTC: the effect should be a skyrocketting price, right? The harder it gets to be mined, the harder you can get it so the price needs a big rise..