Bab 404: Mole Surfaces!

After those words, Lu Siya sank into deep thought as well. She pondered it for a long time before admitting it. "Makes sense."

"Also, many of the insects don't have brains. Even if they have thickened nerve bundles and myelin sheaths to strengthen their intelligence, I doubt that they can handle complicated information," Meng Chao said. 

"What I'm saying is that while it's possible to gather insects in one place to attack a building, it is another matter to have them handle complicated images and identify the minor differences of a human's face so that they can locate and kill certain targets as well as spare the people aside from the targets. This just goes against their instincts. It's beyond the limits of what their nerves can do.