The difference between the two was like that between a regular community college and prestigious universities like Tsinghua and Peking University.
On the surface, they were all universities, but the reality was as different as night and day.
Every cultivator with a Heavenly Spirit Root was a pride of the heavens.
As long as they didn't die, they were certain to become Golden Core cultivators, and could even ascend to become Nascent Soul Cultivators.
Essentially, more than ninety percent of the surviving Nascent Soul Ancestors had Heavenly Spirit Roots.
The minority were those with Upper Grade Spirit Roots.
As for the Nascent Soul Ancestors with Mid Grade and Lower Grade Spirit Roots, there were none at all.
This was the ruthlessness of the world of cultivation.
Despite many claiming that aptitude doesn't determine everything, when looking at the results, all high-ranking cultivators were each and every one a genius.
None of them were dullards.