In the futures market, interest rate futures can be used to hedge exchange rate risks. For example, if I want to buy 50w dollars in the future, then I must be worried about the extra burden brought by the rise of the dollar, so I will buy dollars in the futures market at this time. If it really goes up, my profit in the futures market can make up for my extra expenses. If the interest rate falls, I will have to pay less than $ 50w, which I can use to make up for the losses in the futures market. Complete the purpose of hedging risks.