Bribes are paid in many forms in China but I don't think that Bitcoin would be a preferred form at this stage (as you can't really actually *use* Bitcoin in China as a currency).
Things like "shopping cards" are generally more useful for amounts ranging from say 10K to 100K RMB and for much larger amounts property would be more likely to be used.
If corrupt officials were going to use Bitcoin for anything it would most likely be to transfer their wealth (or ill gotten gains if you prefer) outside of China (as the capital controls make it very hard to move large sums of RMB).
this.
However more likely big bribes are payed with property and other means of value. Bitcoin may be used but is highly unlikely, since the adoption rate isn't that big, especially in government officials. However anything can and will happen in this world.
However bribing in general has definitely happened in the bitcoin ecosystem and will continue to happen, because the nature of bitcoins.
the whole bitcoin foundation took bribes and everyone was cheering them n mtgox until they imploded and wiped out
almost everything, i kept this whole thing together while u though programming was some kind
of God and Gavin n Andreas Pharaohs , it was lols day after day, trade fotress was the biggest spastic of the lot
and his retarded company stayed on the foundation websites 6 months atleast after he had ripped hundreds
of people off