To give you a simple truth, if you buy it, you must sell the hedge, and if you open the position, you must close the position. So buy and open positions-sell and close positions. If you sell an open position, buy an open position.
Both are relative, just remember, don't place a pair of lock orders next time, hehe, a lock order is the same contract with the opposite buying and selling direction. You started it, and you wanted to draw an empty list, but there was one more. Two orders are locked, but the effect is the same as closing the position. It's just that I paid an extra fee.