Sunjh,
It's not that hard to diffrenciate, but you could tell the difference in some of them. Particularly the variety of shells used. China tends to use, in a way, different shells and other materials in their shows, I think. Sometimes you can tell that some of them differ from that of other displays.
Also, to me, China, when presenting their displays, you could tell that it's somehat different than others, more in a sense of culture. This year, they based their show on the title "Butterflies and Dragons," which was a very unique and powerful display. I could also tell from the display that it was heavily dedicated to Chinese culture.
Regards,
Trav.
