2. The total amount is the sum of the trading volume from call auction today to now;

3. Positions refer to the sum of short positions and long positions held in this contract, that is, short positions plus multiple positions;

4. position difference is the abbreviation of position difference, which refers to the difference between the current position and the position corresponding to yesterday's closing price. If it is normal, increase the position today, if it is negative, reduce the position;

5. Masukura means that the daily Masukura is the total position of the day-the total position of the previous day, which is related to the position difference;

6. Different types of futures contracts have corresponding provisions. For example, CICC's stock index futures contract stipulates that the contract month is the current month, the next month and the next quarter, and the last trading day is the third Friday of the contract expiration date, which will be postponed in case of legal holidays. This information can be viewed in the quotation software F 10.

7. Colleagues of futures students, welcome to join me.