One could imagine how exhaustive of cultivation essence and spirit sense using Illusion Cloud Division Strike like this was. Ye Mo didn't experience truth realisation state middle stage and rose straight to truth realisation state tertiary stage. He wasn't used to the sudden burst in spirit sense and cultivation essence. As he used more and more sword rays, his cultivation essence and spirit sense was depleted rapidly but it let him get used to his current power.
Ye Mo gradually immersed himself in this slaughter, he seemed to have returned to the time where he was attacked by countless earth scorpions in the herb valley. The sand spirit beasts here were countless times stronger and more numerous, but comparatively, Ye Mo had an easier time now. He was truth realisation state tertiary stage and his domain was very powerful, even level 11 sand spirit beasts couldn't threaten him.
