Hi Yan,
I’m not sure if this will work for you, but as you have the Gann tool module you could use the Gann Mass Pressure tool which calculates the average daily performance for any given years.
Here’s the tool calculating the average daily performance of the Shanghai Composite index for the last 5 years giving you an idea of when the market turned (you can select any number of years to look back). Let us know what you think.
