Short selling means that you predict that the price will fall, first sell the goods at the quoted price, and then buy them back at the current price of the goods at the time of delivery to make up an empty order. If the current price is lower than the price you sold last time, you will make money; If it goes up, you will lose.

The screenshots above all indicate the delivery time and empty bill price. For example, Apple 2003 refers to Apple Futures, and the delivery date is March 20th. The last transaction price is that you only predicted the price of apple in March of 20 years, 8580 yuan. If you bought an empty order, you are selling a virtual apple now. By next March, you will have to buy back a virtual apple to make up for the number you sold. If the delivery price is higher than the price you sold at that time, you will have to spend more money to make up the difference, that is, lose money, and vice versa.