Back when he had broken through into the Empyrean Stage, Davis had used that chance when his physiques and immortal vessels melted to firmly solidify them using the power of annihilative heavenly yang energy. It created three layers of bedrock that supported the clash between chaos-destruction, obliteration, and reincarnation.
Without tempering his Empyrean Vessel by harnessing the power of annihilative heavenly yang that stood for firm suppression, the three types of cultivation might overflow and damage each other before eventually bringing flaws or even collapsing.
Fortunately, it made his Empyrean Vessel firm and his dantians stable.
However, it didn't account for an increase in prowess due to the incredible stability because it lacked flexibility, giving it all to tie the three cultivations together.
