Why does everyone think China is/was in the dark about bitcoins? Who is to say that China could have their own bitcoins they have enough people to support it?
One can plot the Google Trends volume for the bitcoin hieroglyphs and a similar volume worldwide indicator, like "mtgox". You will soon find out that China was in perfect sync with the rest of the world, with a mere lump when the now famous programme aired. It quickly faded away and the volume is back to it's post bubble decreasing slope.
The whole China hype plays perfectly into western stereotypes about simple minded savages that need to be saved and educated, or in this case, dragged into a pump and dump shady investement. Most of the time the African, Asian or Southamerican savages know much better than the fat westerners what their problem is and usually the root of that problem is precisely some form of western intervention.