Before the end of the last trading day, choose the right time to sell the bought futures contract or buy back the sold futures contract, that is, hedge the original futures contract through the same number of futures transactions in the opposite direction, so as to settle the futures transactions and relieve the obligation of physical delivery at maturity.

Now so many people do gold T+D, and everything else is similar, but gold T+D can be postponed indefinitely and will not be forced to deliver when you don't want to know the contract (such as losing money).