Lily, Mimi, Huarin, and Dreevindo refined their body using profound vitality power from Athan and made leaps in their progress. Their genealogy path's progress increased a lot because to ascend to legendary; one must have a profound understanding of genealogy vitality, orchos energy(evolution energy), and soul power.
They need to have those three things at their limit before they can form their Legendary Genealogy path.
After refining their bodies to the limit, they told Athan to stop since they couldn't make any more progress.
They need to break through to the Legendary stage to make more progress.
As such, Athan started transferring origin soul power to them with the same method, but the threads were connected to their soul this time.