Combining the above, I'll give you an answer. A futures product has many contracts. For example, the corn in Dalian has 1 10 1.

1 103

1 105

1 107

1 109

1 1 1 1

The contracts respectively represent the delivery month, so the contracts approaching delivery now are 1 1 kloc-0/,11,and the price of this futures contract is the closest to the spot price, which is basically the same by the delivery date. Of course, futures and spot prices are interactive.