Many of us here thinks that China is not controlling bitcoin for many different reasons , I think in myself that I agree that China isn't controlling it , It just happens that China has the Big number of miners and I think bitcoin can survive with out China.
50 percent of people here in forum are believing that china is controling the bitcoin price it just because of the reason of fake volume exchange that makes the bitcoin price boost into increasing price. China also had the most users who uses bitcoin and they starting to create good technology that can change the world with bitcoin.
the fact that the highest number of transactions was using chinese yuan. they have the biggest bitcoin minning in the world. they can control the price of bitcoin by influencing the supply.