I'm sorry, what? The Exchange System actually gives Free Players the ability to purchase things from the Cash Shop. That is in no way Pay 2 Win. The gold players are buying with Ncoin comes from other players, and if this system wasn't available they would probably just buy it from Chinese gold sellers. The Cash Shop itself is not selling anything that gives paying players an advantage, and this system actually allows free players to get costumes and other knick-knacks from the shop just by selling some of the gold they earn in game to others.