LME in Superstar Fortune has a unique settlement system, and its settlement is completed by LCH (London Clearing House). LME's 3M standard contract is delivered on a daily basis, which ensures that the LME market has a contract due for delivery every trading day, and the market is more flexible. LME contracts will not be settled or delivered in kind before the expiration date, that is, the profit part can only be withdrawn after the expiration date of the contract. Suppose that the expiration date of the contract bought in February 1 is May 1. Suppose you close your position in March 1, but the profit is equivalent to being frozen in the futures account, and you can only take it out after the contract expires in May 1. In the customer's bill, even if the LME contract has been closed, it will still be reflected in the position in the form of a locked order until the expiration date. (The deposit can be withdrawn and the profit can be partially frozen)