Closing a position is to throw out the transaction sheet in your hand. The significance of closing multiple orders is the same as that of closing empty orders.

Futures, like stocks, are also matchmaking transactions, which means that someone has to buy them when they are sold. Assuming that multiple orders are closed and sold at one price, there must be another investor who takes over multiple orders in his hand at the price where the investor closes, so he can sell smoothly, and vice versa.