I share these Gann setup's quite often but people don't really seem to understand or have to knowledge what these geometry structures mean. Basically the Gann Square creates angles that reveal where value and time grow according to certain ratio's. The 45 degree Gann Angle is the most famous where value and time make a perfect 1:1 ratio, above this line value is dominant in momentum and below time is dominant. NASDAQ is currently hitting the 3/4 time target of the Gann Square and we see it's also hitting a resistance angle projected from ATH to the 50% price at 100% time values.
Try to study it, experiment, gann square can be really powerful!