There is no need to save money after the foreign exchange is locked. Because lock orders are a common operation method in foreign exchange transactions, they can guarantee their own interests to the maximum extent. Just long and short the same number of contracts on the same currency pair. Lock orders cannot be closed at the same time, that is, you can trade in one direction first, and then trade in the corresponding direction after a while. Locking orders can lock in losses or profits. This situation is rare. Mature traders can, and their thinking should be clear, so as not to trap themselves.