The contract list refers to the list of futures contracts currently traded in the futures market. The first two letters in the middle of the variety code refer to the underlying assets (that is, the code corresponding to the physical assets) of trading futures, and the last two letters represent the delivery month, usually 3-month futures. For example, 03 represents March futures as the delivery month, and the middle represents the year. The contract multiplier represents how many times the transaction price of each futures contract is its quotation. For example, the cotton here is 5. So if the quotation is 10, then the price of each contract is 50. Similarly, if the price changes by 1, the price changes by 5. The minimum price change unit is when the price changes by this unit, as shown in the figure. When it is 5, the current quotation is 10, the next quotation is 5 or 15, and the last date is the time when the futures contract stops trading. The ratio of long/short margin refers to the amount that must be kept in the margin account relative to futures. For example, if you buy futures of 100 yuan, the margin ratio of 10% means that there must be 10 yuan in the margin account. Opening/closing/closing fees refer to transaction fees. The difference between closing position and closing position is that closing position today is closing position today. That's about it, I don't know if it's clear ~