This is called the nature of the transaction, which is determined according to the direction of the big order. The futures market is a two-way transaction. Both long and short sides have opened positions; Close your position, so you need to have the concept of your opponent's hand. One side of long-term trading is that many parties open new positions; On the other hand, the empty side opens a new position; And multi-party liquidation. Usually, the large single direction is flat and multi-single; The opponent's hand includes open and non-open. Multi-crossing is a new multi-position opening; Old and many single liquidation. Open; Empty and flat; The reason for being empty is the same. Double opening; Double peacetime long and short single quantity is equal.