volume
Trading volume refers to the unilateral quantity of all contracts traded in a futures contract during the trading day
open interest
Open interest refers to the single-sided amount of open contracts held by futures traders
highest price
The highest price refers to the highest transaction price among the transaction prices of a futures contract within a certain period of time.
lowest price
The highest price refers to the lowest transaction price among the transaction prices of a futures contract within a certain period of time.
opening price
The opening price refers to the transaction price generated by the call auction within 5 minutes of the market opening of a futures contract. If the call auction does not generate a price, the first transaction price after the call auction is used as the opening price.
Closing price
The opening price refers to the last transaction price of a futures contract on the current day.