The mortgage failed after the lock, so I can't leave it. Extreme krypton lock order refers to a lock order with only investments that can be traded in two directions, and is usually used to hedge open positions. If you do not click Lock Order, but directly place a reverse order in the same currency group of the open position, it will lead to the reverse reversal of the original position. During the order locking period, based on the previous order information, users can modify the version, configuration, owner information and car purchase information in the order.