SE: You are loosing potential customers

[Magis]

So, either there are 1.5m chinese players, or they jumped from 2.5m to 4m registered users in two months.

People in China are the only ones joining the game? Across the whole world plus a major release in both China and South Korea would increase the amount of registered users* greatly.

*Also registered users != subscription. Buying the game will automatically make you a registered user since no sub is needed to register an account.