This line in "The Chinese stream" The Economist - Nov 9 2013 seems to imply that China has a rule barring depictions of time travel.
Rules about content range from the predictable (no shows inciting political unrest) to the puzzling (no depictions of time travel). It takes months for programmes to get official approval for broadcasting, and only an estimated 30% of shows that are made get aired on TV.
This appears to be confirmed by The Guardian which even states the reasoning:
Sci-fi encourages us to imagine alternative realities – so if China is none too keen on the Doctor and his ilk, don't be surprised ... Time travel television, said China's government administrator of radio and television, is "frivolous" in its approach to history – a verbal warning that was seen as tantamount to an official ban. ...
The Marxist literary critic Frederic Jameson once pointed out that science fiction and historical imagination are actually aspects of the same thinking. He believed that the effect of immersing yourself in another historical age in, say, The Eagle of the Ninth, was very similar to travelling in your mind to the world of Isaac Asimov's Foundation Trilogy. Both genres are set apart from pure fantasy, because they claim some basis in reality. Sci-fi expounds futures that might be possible, or at least that follow basic rules of human nature in how they portray people; historical fiction is, likewise, rooted in actual events.
So China is right to fear time travel. No state that wants to keep governing forever can afford to let people imagine alternatives. Perhaps this is the true reason for Doctor Who's popularity in Britain. When it screens, millions of people defy the rule of reality and escape together into worlds of possibility, worlds of otherness, dreams of utopia.
With such a well-known programme, I would be surprised if there wasn't some sort of underground trade in bootlegged videos or something similar - but the main question boils down to this:
Is Doctor Who a popular show there? Is there some sort of underground community, or does this seemingly bizaare restriction inhibit fandom there?