Changsi City alone had such a large population, which, according to the general situation in the Immortal Realm, meant at least one-quarter had the aptitude for Qi refinement. Now, with the virtual moon in the sky, it was the easiest time in a thousand years for cultivation. Out of those, the ones with the fate to build their foundation could be as many as one or two out of ten, which meant there were fifty to sixty thousand Foundation builders.
Even though the vast majority were stuck at the peak of the Foundation establishment stage, unable to inch forward, there were still so many people and so many clans, each with their family traditions and resources. A rough estimate would suggest there were at least a couple of thousand, if not seven to eight hundred, Golden Core masters who could attain the path of Immortal cultivation.