When the price of buying pending orders is higher than the market price, or the price of selling pending orders is lower than the market price, these pending orders will be regarded as "market orders" and traded directly in the trading system. In futures trading, most transactions are conducted through futures pending orders. There are two kinds of futures pending orders: one is buying pending orders, and the other is selling pending orders. When the price of buying pending orders is higher than the market price, or the price of selling pending orders is lower than the market price, these pending orders will be regarded as "market orders" and traded directly in the trading system.