Guild Wars 2 China will be entering its very first test phase on 2nd May, and only a handful will be selected. For players who are present throughout all test phases till launch, they will be awarded with a limited edition gold medal, as seen below.
I presume the other 2 , silver and bronze, are for those who participated in a lesser number of test phases. 1 of the most anticipated MMORPG in the country, ArenaNet will be looking to add unique Eastern designs into the game.
