2. Spot, the instant turnover of stocks. The minimum transaction volume of electronic spot is one batch, which is equivalent to one share. For a recent transaction, it is also called cash.

3. Ratio, which is an index to measure the relative turnover rate. Refers to the ratio of the average turnover per minute after the opening of the stock market to the average turnover per minute in the past five trading days. Its calculation formula is: floor area ratio = total number of transactions/cumulative opening time (minutes)/average turnover per minute in recent 5 days.

4. Changing hands is used to describe buying or selling an equal share of futures from one person to another, that is, buying and selling.

5. Volume refers to the total number of shares traded on that day.