One: The simplest method is to subtract the number of hands in the inner disk from the number of hands in the outer disk, and then multiply it by the average transaction price of the day to get the net capital flow of the day. If the outer disk is larger than the inner disk, it is a net inflow of funds, and vice versa.

Some futures technical analysis software may have more complicated calculation formulas and more comprehensive data, but its fundamental principle is to distinguish the outer disk from the inner disk according to the volume calculation of market returns.

2. There are many statistical methods to calculate the trading inflow during the futures rising period and the trading outflow during the price falling period:

1. If the index is up compared with the previous minute, then the turnover of this minute is counted as capital inflow, and vice versa. If the index is the same as the previous minute,

2. Trading is also related to the calculation of capital inflow. For rising, only buying is calculated as capital inflow, and for falling, only selling is calculated as capital outflow. Then calculate the capital inflow and business trip for the whole day.