Qingshan Group produces nickel. In recent years, the price of nickel has risen slowly. In order to ensure its own profits, Qingshan Group shorted nickel in the futures market. In this way, if the price of nickel rises, the spot products of Qingshan Group will be sold at a high price, and the loss of shorting in the futures market will be irrelevant. If the price of nickel falls, the spot selling price of Qingshan Group will fall, but the short profit in the futures market can make up for the loss caused by the fall of nickel. The purpose of Qingshan Group is to ensure its own income, like taking out a double insurance.