What does futures mean? In futures, "multi-flat" and "empty flat" both mean liquidation. When multiple orders held by an account are closed, the trading system displays "how flat", that is, selling and closing in traditional trading. When the empty order held in the account is closed, it will be displayed in the trading system, and it can also be considered as buying and closing. In the futures trading position index, long position closing means that the position decreases, but the absolute value of the position increase is less than the current position, which belongs to active selling; Short position means that the position is reduced, but the absolute value of the position increase is less than the current quantity, which belongs to active buying. Corresponding to multi-level and short-level, there are multi-opening, empty-opening, double-opening, double-opening, multi-exchange and empty-exchange, which all embody the concepts of trading and position change. Different from stock trading, the trading volume of domestic futures is calculated bilaterally, so the trading volume includes both buying and selling, which is twice that of unilateral calculation. Every transaction is accompanied by a transaction, and the volume increases, but the position may increase, remain unchanged and decrease. When there is no liquidation, there are four basic States: double opening, pun, multiple turning and somersault.

Now that we know the meaning of "multi-flat" and "empty flat", futures prices are formed in the transactions between buyers and sellers. Corresponding to bulls, bears can close positions and bulls can open positions. If a short position is closed, it is called a double position, and if the counterparty is a long position, it is called a multi-exchange. However, in the process of futures long position closing, if the position is not closed at one time, the number of long positions is greater than the number of short positions or the number of short positions, which is called multi-flat. The short position level, that is, the number of short positions in warehouse receipts, is hedged by more than two long positions or short positions. The same is true of driving more and more.

Different from multi-flat and empty flat, if the number of warehouse receipts traded by both parties is exactly equal, it is double-open, double-flat, multi-exchange and empty exchange. Double opening refers to long positions corresponding to short positions; Double flat, that is, long positions correspond to short positions; Multi-exchange refers to one long position opening and the other long position closing; Short position exchange means that one short position closes and the other short position opens.

The futures market has the function of hedging, and commodity (or financial product) operators can avoid the risk of price fluctuation through the futures market. However, among futures participants, market speculators account for a large proportion, and they all gain profits from the price difference in price fluctuations through trading activities, and the way to realize profits is indispensable to liquidate positions. Multi-level and short level appear under such circumstances, because both long and short positions need to correspond to two situations when closing positions, and according to the corresponding relationship.