Of course. In the futures market, you can open positions on the main contracts and sub-main contracts of the same variety at the same time. The main contract refers to the contract with the largest transaction volume and the highest liquidity, and the second main contract refers to the contract that is second only to the main contract. The main contract has high trading activity and good liquidity, while the second main contract has relatively low trading activity. At the same time, the main and deputy main contracts may be opened for the purpose of diversifying risks, obtaining better trading opportunities or taking advantage of spread arbitrage opportunities.