For example, IF 1204' s current index is 2600, and I think it will rise to 2800 by the delivery date (from a practical point of view, the index has fallen in the current period one year after the delivery date), so I bought too much, and I don't care whether I buy it or not, but I will settle the funds on the delivery date (of course, but I can also close my position at any time, as you know below). I can't continue this transaction from now until the delivery date of next month, but isn't stock index futures trading in T+0 mode? What's going on here? Can stock index futures be traded at will during trading? After buying it, it really went up a few hours later. Can you sell it again at this time (yes), so as to earn the difference? As for the trading of stock index futures, is it easier to buy the ups and downs of four IF indexes (at present, only one stock index is listed, of course, there are differences in the current month, the next month and the third month), and there are more than 2,000 stocks in the Shanghai and Shenzhen stock markets, so isn't stock index futures easier than stock trading? Yes, but it's more risky.