Yes, the difference is not whether it is flat or empty, but whether the market outlook after the flat order is long or empty. For example, if you find that the market has turned down, you will close your position or make a profit with empty orders, and the loss of empty orders will gradually decrease when the market falls. In this process, if the profit of multiple orders is greater than the loss of empty orders, then empty orders can be flat orders, open positions, or empty orders can be completely profitable, and both perfect orders and long positions can be profitable. What's more, locking and unlocking are actually contradictory. I'm hungry.