When you purchase an item with the ZBT balance, our system will match an order that can exchange ZBT to T coins via the 【OTC】 function, and inform you of the ZBT payable amount. If your ZBT balance is sufficient, then you can complete the payment and purchase the item.
The exchange process in 【OTC】 function is to match the order that submitted by other users who want to exchange ZBT, therefore, the order may be exchanged in advance by other users. That’s what we call “market fluctuations”. Once the “market fluctuations” happened, if there is a T Coin order can afford you to exchange, then the system will automatically change the ZBT amount that you need to pay; if there is no suitable order that can afford you to exchange, then you can not use ZBT balance to purchase items.