Relatively low interest rates will lead to arbitrage, that is, the act of converting low-interest currencies into high-interest currencies for investment, which will make the high-interest currencies appreciate in a short time. In arbitrage, investors often make long-term compensation for arbitrage in order to prevent the loss of exchange rate changes, that is, they sell long-term high-interest currencies and depreciate long-term high-interest currencies while exchanging them at the spot.