The two countries that are most important to Bitcoin are the US and china. China, because it has the most people (esp. most people intersted in Bitcoin), and US, because it has the most money because... well... it prints it all.
China's population is poor on average and despite its tremendous numbers it is hard to tell how much
ordinary people can buy (what would make it matter). So I doubt there's considerable interest in Bitcoin among chinese Jane and Joe...

But there are a lot of newly rich people in China that don't have any investments to put their savings in. They don't have Fidelity.com offering 100,000 mutual funds and stocks. They buy empty apartment buildings right now, because there is literally nothing to invest in.
If you want to shed your decade-outdated notions of China and see what is really going on right now and how much wealth they really have with nowhere to put it, watch this 60 Minutes segment:
http://www.cbsnews.com/video/watch/?id=50152767nThis is why people are getting out of real estate in China and into bitcoin. And looking at all those apartments, don't expect it to stop anytime soon.