There is only one kind of circulation in the game: gold coins. Outside the game, those are Battle.net points, which can be used to punch in, change props that will not affect the level and do some services such as changing clothes, changing names and races. The recharge amount of Battle.net points is RMB. In the game, gold coins can buy cards or other tradeable props from people, but this is not guaranteed and will be banned if they become officials.