Killing Mandrills

Turning their attention back to the battlefield, Cheng Qiang and the other four were already in danger. The energy in their bodies had been almost exhausted. At this moment, their attacks were completely sustained by their consciousness.
But their efforts were not in vain. A mountain of corpses had piled up beside them. In this short period of time, they had slaughtered more than three hundred mandrills. The progress they had made in the past month was proven by this pile of corpses.
I don't...