Here is what Groupon has to say about Q’s Chinese Restaurant, in Columbia (emphasis mine):
At some point, every country builds a Great Wall to keep the secret of its cuisine from spreading to foreign nations, only to find that the real wall lies in its heart. Tear down the Great Wall of painful secrets with today’s Groupon to Q’s Chinese Restaurant.
It’s also a stupid metaphor.
Update: I’d be remiss to not embed Conan’s parodies of the Groupon commercial: