Its for 06 STi, hence New Age Impreza, and how it looks like a shark via sharkfin vortex generator. Thats what i think
only thing I could come up with and this may not be true because you can't believe everything you read on the web but:
I'm not sure about the "hard skined shark", but I think going purely by pheonetics, in mandarin it sounds like either "silver great white shark" or "hard great white shark"
Prob so since only the front end has changed and is swappable. GDA, GDB, ...etc What are they on now, GDF??
A bit of back story could explain the meaning I think... When the R34 was still the king, the Evo and STI were called the Tuna and halibut (being the less robust and "norm" fish), and the R34 Skyline was called big blue (there are many nicknames for it, but big blue is a crack on it's computer systems, like IBMs deep blue). They are kinda out of favor now and the big name AWD cars are the Evo and STI. and someone explained the shark aspect already. It's like how a lot of the big cars in japan are called Yanku Tanku or yank tanks, which cracks me up, lots of the low power nissans and toyotas are called that, like the celsior, crown, non turbo aristos, president, etc. ya I know to much about this stuff, I get most of it from the car importers, they always have fun little facts and stories about the car scene in Japan.