1, and the total amount refers to the total number of lots in this contract so far. In China, 1 hand is traded by both parties, so you can see that the mantissa is double digits.

2. Spot is the number of lots waiting to be traded now, which is essentially speculation or hedging, and is generally speculative.

3. Open position refers to the sum of the number of open positions that have not been written off by buyers and sellers. The size of the position reflects the size of the market transaction and the difference between the long and short sides in the current price. For example, if two people are counterparties, one person opens a position to buy 1 contract, and the other person opens a position to sell 1 contract, then the position is displayed as a 2-hand contract.

4. The position difference is the value of today's position minus yesterday's position, the total number of lots is the total number of traders, and the position is the number of contracts held. There is too much knowledge to study and practice in detail: the essence of futures is to sign a long-term contract with others to buy and sell goods (or stock index, foreign exchange, interest rate).