In futures trading, buying and selling can of course be different. Because that's not a finalized price, it's just an order waiting to be finalized. Only when the price becomes the entrusted price will the price become the actual transaction price. The price change depends on which is more, the buyer's commission or the seller's commission. Investors quote the entrusted price, and the computer automatically matches the transaction according to the principle of price priority and time priority. Therefore, due to the superposition of the entrusted price and the change of the market price, it is very common that the buying and selling prices are different.

The system is sold at a selling price.