Blue. A blue colour root.
Fang Yuan stared at the confused girl, the glow of the spirit stone painting her face in soft celestial hues.
Yellow, that was the most common root known to mankind, and it was the weakest.
Cultivators born with it rarely made it past Qi Condensation.
Maybe Qi Transformation if they were stubborn and lucky enough.
Hard work could beat talent, sure but not when talent started with a broken foundation.
He had never seen a yellow root cross into true power.
Then black, respectable enough.
With black, one could reach Golden Core if they worked hard. Many did. It was the most stable of roots, dependable and balanced.
Brown followed, most commonly called as Earth Grade. It was freakishly rare.
A sign of potential that could even touch the Nascent Soul realm. He'd seen one or two succeed with it. Most didn't.
As for white… white was heavenly root.
He had that himself too.