At the initial appearance of the [Ancient Power] rune, Ronan speculated whether the [Ascetic Body Refinement] training was merely a "preparation" for the emergence of [Ancient Power], allowing practitioners to withstand this terrifying might.
Just like how [Ancient Power] is a blade, and the [Pure Body] is the sheath.
Now the problem Ronan faces is — the blade is too sharp, too sharp for this sheath to accommodate it anymore.
During the growth process of the [Ancient Power] rune, his body is constantly being destroyed, with almost all of his abundant life force being used for repairs, thus leading to severe life energy depletion.
To solve this problem.
Either increase the storage of life energy in the Life Light Ball, thereby accelerating the speed of physical repairs.
Or..
Reinforce the sheath itself.