The chart is about how gold goes up when real interest rates (adjusted for inflation CPIAUCSL) on 10 Year Treasuries approach zero.
And as you can see, the red line (10 year treasuries adjusted for inflation) is now exactly at zero. So that is bullish for gold.
The red chart right = Yields on 10 year treasuries adjusted for CPI.
The green chart left = Percentage change in Gold.
|Chart 1: Gold (% change) Vs. Real 10 Year Interest Rates (% change)|