As a European that takes in a good bit of american business reporting (doesn't everyone?), I'm kind of amused and surprised at how China's rhymes. The common sense understanding of a consumer driven economy, the fantastical scale.
I sort of imagine that to a caricature of an old americana businessman, this sale is a significant event. The quantity of the chinese market (even per capita, by the satisfyingly physical measure of "biggest sale ever" and it's easily visualised as a mountain of packaged goods), is a quality of its own^. At least, that is what my caricatured character believes intrinsically.
^This is a made up quote attributed to Stalin. I love how american sounding it is, in retrospect.