A: As far as interest rate futures are concerned, the so-called hedging means combining the transactions in the spot market with the reverse transactions in the interest rate futures market, and selling them in the futures market when buying in the spot market (that is, selling hedging), or buying them in the futures market when selling in the spot market (that is, buying hedging). In this way, the loss in one market can be made up by the profit in another market, thus avoiding the risk of interest rate fluctuation.