Futures correspond to spot prices and are derived from spot prices. Futures are not goods. They usually refer to tradable standardized contracts based on a certain commodity or financial asset. The so-called spot transaction means that the buyer and seller of securities go through the settlement procedures after the transaction is completed. The buyer pays the funds and gets the securities, and the seller delivers the securities and gets the funds. The characteristic of spot trading is "pay with one hand and deliver with the other hand", that is, the transaction is carried out by buying spot with cash.