1. According to the rules of the exchange, different transactions have different clearing rules. Some can specify closing positions, and some default to opening positions from the front.

2. There is no difference between the fresh warehouse and the back warehouse, which is a kind of psychological comfort. Some exchanges can choose to close their positions and play settlement games for customers.

3. Even if the exchange does not support selective liquidation, the settlement system of the futures company can choose liquidation according to the requirements of customers, which is just to play a settlement game to comfort customers.

4. If you are still addicted to clearing the profit list first and keeping the loss list until you make a profit, it shows that you are far from being a basically mature trader.