Customer's equity = previous day's balance+liquidation profit and loss+floating profit and loss+deposit and withdrawal-handling fee.

The balance on the last day refers to the total amount of the customer account on the last trading day.

Liquidation gains and losses refer to the gains and losses in the actual liquidation process.

Floating profit and loss, also known as position profit and loss, refers to the potential profit and loss calculated according to the initial transaction price of the position contract and the settlement price of the day.