China is a major economic force in the world today. they are comparable with the united states of america. economic strength is growing so fast. as well as on bitcoin, they also control bitcoin because most bitcoin now scattered in china.
Its not that bitcoin is scattered in China, its the bitcoin nodes and the big mining farms are present in china due to low electricity fees and the setup costs for setting a mining farm, probably there are still US based persons controlling those farms in China. ![Grin](https://bitcointalk.org/Smileys/default/grin.gif)