"That explains a lot. From 'distraction' to 'fusion'!
Li Yao had read before, so naturally, he knew the classification of the "Four Universities of Cultivation"—beginning from the Divinity Transformation Stage, it was the highest level to break through the limits of human beings, and the Dividing Soul Stage and the Form Synthesis Stage were even more mysterious and incomprehensible. There was no pattern to their training, either. They were like deities and devils.
Li Yao could somewhat understand the formidability of the Dividing Soul Stage. An expert could transform into thousands of clones. Billions of telepathic thoughts equaled to billions of soldiers. One person equaled to the combat ability of an army. Wasn't it strong enough?
However, Li Yao had never been able to understand how strong a Cultivator in the Form Synthesis Stage was. Now that his soul could be divided into billions of pieces, wouldn't it be redundant to reunite them?