Auxiliary combinatorial understanding

Duck knocking at the door

In order to create the illusion of midfield, members or customers of the exchange attempt or actually seriously affect the futures price or midfield position, deliberately collude and trade or buy and sell with each other in a pre-agreed way or price. For example, the latest transaction price of soybean futures contract in forward money market is 2800 yuan/ton, and member A sells lm contract at 2850 yuan/ton. If there is no agreement in advance, someone can buy the contract sold by Member A at this high price. Member B agreed with Member A in advance to buy 100 machine heads at a price of 2850 yuan/ton, so the computer matched the deal. At this time, the transaction price of 2850 yuan/ton appeared in the market, which increased the original midfield price by 50 yuan/ton.