After Xiao Budian used the "Yu" mantra, he managed to stop the Great Boundaries of the Celestial Light and Darkness Mandala from collapsing unto itself and hence, halted its destructive potential.
Despite the fact that Zhu Yi was the creator of this tiny universe, he was unable to destroy it.
Zhu Yi furrowed his eyebrows, but before he could make his next step, Xiao Budian made his next move.
Within the Great Boundaries, Xiao Budian punched his chest with both of his hands. From within his fists, tiny waves began to spread. Soon, the entire space within the Great Boundaries was trembling, and one could see tiny wave-like patterns forming in the space, like water ripples.
After the Hammer of the Yellow Heaven Bell smashed against Xiao Budian's Green Bronze Crucible of Emptiness, he obtained revelations and was able to synthesize his revelations with his "Yu" mantra. In doing so, he created this deviation.
