This is very simple and easy to understand. Your futures trading must be a standardized contract. If you want to know about that variety, look it up yourself. There is no contract price in it, but this contract has a market price. When you trade, you buy or sell the contract according to your current market price. After a period of time, the market price changes, and you can make money or lose money according to the price of your liquidation. How to fight, how to trade, how to do business, how to buy and sell, this should be understood, right?