You don't have to go to the exchange, but you will be given a strong level in the futures brokerage company. The example you cited, after a long time, caused a loss. Once it exceeds 1.300 yuan (5000-3700 yuan), it may be leveled. The specific situation depends on the respective regulations of each futures company. Futures companies will generally add a little margin to the margin amount stipulated in the transaction. Therefore, the risks of futures companies can be effectively controlled when they are forced to close their positions. As for the future stock index futures, there is a particularly strong leveling rule in the design of exchange rules. Generally speaking, it is flat at the daily limit or limit position. In the position of daily limit or daily limit, if there is a stop-loss order at the close, the exchange will close the profit positions of customers who have made profits continuously to meet the stop-loss order and control risks.