1, I want to ask, after buying or selling futures, if there is a loss, I need to add margin. If I close my position (selling or buying the same futures), do I need to add margin?

A: Yes, if you close your position, there will be surplus funds, and there is no need to add margin.

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2. What is the relationship between liquidation, hedging, hedging liquidation and reverse trading?

A: Closing a position is the reverse operation of the same contract, such as buying and selling.

There is also a method called locking positions, such as buying and selling, which are all open positions, but in the opposite direction.

Personally, this operation is not recommended.