First rebound to a high position to sell the order, and then buy it backhand, so that after the market falls, some losses can be recovered, and if the market cooperates, it can also be returned;
Second, if the market continues to fall, you can lock the position directly. After the market stabilizes, you can empty it first and then lock it when it rebounds until it is unlocked. But this process is more troublesome, and it is not easy for ordinary people to operate.
Third, set a stop loss below the support level. If the market falls below, there is no other way but to recognize it. If it doesn't fall below, it will rebound and the loss can be reduced. This operation is risky and should be used with caution.