It is relatively easy to understand that many orders are flat, that is, buying and selling. Empty orders deviate from normal habitual thinking. Technically speaking, it is to sell first and then buy, which is the opposite of the previous action. For example, you can understand that if you are a soybean farmer now and your soybean has not been harvested, but you expect the price to fall when harvesting in autumn, you should sign a contract with the oil mill now and deliver it to him at the time of harvesting, and you should deliver it to the oil mill several months later at the time of harvesting. When you signed the contract, you were out of stock. When you sign a contract and sell it to an oil factory, the action is to place an empty bill. When the goods arrive, it is equivalent to an empty bill.

Ordering more is buying. If you go up, you earn, and if you lose, you lose. Flat more than one single is to sell more than one single, similar to stocks.

Empty orders are sold. If you fall, you will make money; if you rise, you will lose money. An empty order is to close your empty order.

Futures are risky, I wish my friends good luck.