1. The transaction volume of domestic futures trading refers to the transaction amount, and the unit is “yuan”.

2. The calculation method is the sum of "each transaction price * transaction quantity".

3. To give a simple example: If 5 lots of soybeans in a certain month contract were traded, 2 lots of 3120 yuan, 1 lot of 3125 yuan, and 2 lots of 3130 yuan, the transaction fee will be calculated. The "amount" is: 3120*2*13125*1*13130*2*10=156250 yuan=156,250 yuan.

4. The transaction amount is calculated unilaterally. For example, in the above example, only the transaction amount of one side (either the buyer or the seller) can be calculated.