Setting 10 is more appropriate. P is the index parameter value, and the default value is 10. Click the right mouse button on the long-short ratio index to set the index parameters. Select DUALVOL to modify the p value on the right. Dualvol refers to the long-short ratio. Wenhua's original index "DUALVOL" is more sensitive to the change of trading volume in the futures market and can reveal the strength of long and short energy in real time.