Futures are the sale of standard contracts. When you have a standard contract position, if you have no physical delivery, you should close your position before the contract (such as Shanghai Copper Contract 1007, 20 10) expires, and the way to deal with it is to hedge your position.

1 floor is wrong. The settlement method of futures is debt-free settlement on the same day, also called real-time settlement. Profit and loss will affect the principal of your remaining available funds.