Quantity doesn't count. The idea is simple. Because 1 10,000 dollars was received three months later, I am afraid that the dollar will depreciate, and I am afraid that it will depreciate. I'll sell the dollar futures contract now and buy it at a low price. If it appreciates, there will be some losses, but the losses will be locked in, because US dollars will be received at that time. In this way, the purpose of avoiding risks is achieved.