For example, the current price of corn is 2000 yuan a ton, and you think the price will rise in the future, then you can buy it in the futures market at the price of 2000 yuan a ton now (it is a purchase contract, not a home corn). After a while, if it meets your expectations and the corn rises to 2,500 tons, you will earn a ton in 500 yuan at that time. But if the price of corn fails to meet your expectations and falls to 1500 a ton, then you will lose a ton in 500 yuan.

Another way is to give a list, for example, the current corn is 2000 yuan a ton. If you think the price will fall in the future, you can sell it at the price of 2000 yuan a ton in the futures market (even if you sell the contract, you can sell it without selling corn). If it meets your expectations after a while. The real price of corn has dropped to 1500, and you make a profit per ton, 500 yuan. But if the corn doesn't meet your expectations, and the corn rises to 2,500 a ton, it will cost 500 yuan a ton.

And hedging transactions. In this case, you can search Baidu Encyclopedia on Baidu. It's written in detail there.

There is also the leverage effect, which means that corn is now 2000 yuan a ton. If you want to fire, you don't have to pay 2000 yuan. Just take it out (5% to 20%), and now it is about 13%, that is, 2000 ×13% = around 260 yuan. This is the leverage effect.

It's very popular and detailed. I didn't copy and paste a word, but typed it word by word.

Hope to adopt!