The bidding process is to close the transaction according to the maximum transaction within one minute. What you said about buy 1, buy 2, buy 3 and buy 4 obviously doesn't exist. Your stock grant has great influence. At present, the futures market is mainly to buy one and sell one. Only L2 has a fifth-grade market, but there is no fourth-grade market as you said. Buy what you want, and hang it if you want, but the futures are different, the contracts are different, the price jumps at different speeds, and some are fleeting. If you want to sell, you might as well choose to chase the price and place an order. The latest price is based on the principle of price priority and time priority.