You can buy and sell Bitfan points.
You can accumulate Bitfan points simply by playing, e.g. joining a fan club, participating in events, purchasing goods, participating in SNS, and so on. In “Trade”, you can sell the Bitfan points you have accumulated by setting a price. You can also buy listed Bitfan points to increase your own points. The system makes everyone happy as 10% of the transaction amount is refunded to support the owner issuing the Bitfan points.