Upon hearing Xie Liancheng's words, Zhou Xu's first reaction was, The power of True Speech!
He already knew that those green skins possessed a "WAAAGH!!! force field." It was not entirely impossible for sufficiently powerful True Speech to reach a level visible to the naked eye.
With that thought in mind, Zhou Xu looked toward Shi Lei.
"Has this happened with any of the other green skins?"
"No."
Shi Lei answered very crisply. Clearly, he and Xie Liancheng had already discussed this question beforehand.
"After discussing the situation, Colonel Xie and I came to two conclusions."
"First, it's possible that the other side's power of True Speech has reached a certain level of strength, which is why that effect formed."
"Second, it's possible that the other side possesses some other special power."
At this point, Shi Lei seemed to want to say something else, but he appeared unsure how best to put it.
Seeing this, Xie Liancheng promptly added, "For example, battle aura, qi, or something like that."
Zhou Xu was speechless inside. Xie Liancheng had clearly read his fair share of novels back in the day.
Still, it could not be said that his speculation was entirely unreasonable.
After all, Xie Liancheng's own strength was right there. To force him into that state, the other side either had to be another top-tier five-star mighty general, or possess some special means.
From Zhou Xu's perspective, whether it was battle aura or qi, both were merely concepts.
Put simply, as long as one cultivated energy within the body and could use that energy in battle, it could be understood as something akin to battle aura or qi. Change the terminology, and it would still apply.
To be even more direct, it made perfect sense to understand the power of True Speech