Note that traders want. People who do more certainly hope that the price of wheat will rise in the future, and they can purchase at a lower price and reduce the purchase cost; For bears, it's just a hedge. It doesn't matter to him whether the price falls or rises in the future: if the price falls, it will be sold at the contract price without loss; If the price rises, it is also sold at the contract price, and it is lost (unexpectedly).

Summary: long buy contracts, short sell contracts. The buyer's motive is to save costs and gain profits, and the seller's motive is to preserve value and not lose money.