First of all, futures are called futures because futures represent forward prices, while spot prices are the basis of futures prices and are formed by futures delivery machines.
Second, futures prices often deviate from spot prices. Futures and spot markets are two independent markets, and speculative factors such as capital will lead to prices significantly higher than spot prices and lower than spot prices.
At this time, if you are sure of the future price of commodities, you can take advantage of the opportunity that futures are far below the spot to buy cheap and sell expensive in the futures market, that is, buy low and sell high.
In addition, because the futures market is a margin system, generally only 10% of the funds can be used to buy and sell goods, so the flexibility is relatively high.