Their bodies couldn't take much.
As they were slowly consuming it, they felt pressured and soon started to face the inner demons, the Nether King was talking about.
A black colour qi slowly started to curve into their bodies and was starting to contaminate their minds and their bodies.
Both Red Root and Silver Flower felt immense pain at it and their minds went berserk.
Both felt an instant blockage in their absorption of the spirit qi and felt detrimental pain.
They felt massive agony in every part of their bodies.
Because their body was refining ancient spirit qi and the inner demons just happened to come up there, they felt severe clashes inside their bodies and their suffering was exceedingly disastrous.
If it were a normal spirit qi, they wouldn't have felt this much pain but because this was both the ancient spirit and the inner demons that were clashing against each other, they were feeling suffocating.
