The price was RMB 2.6, and the rebounding high point b, the price was RMB 7.9. After the price returned to point c, the price was RMB 6.4. We use the formula to calculate the pressure, multiplying 7.93 by 6.41, and then dividing by six.
Twenty-six equals 8.12, which happens to be near the high point where the stock has risen again. It is recommended to do more review research in combination with actual cases.