Fang Yuyang freed a hand and released a Wind Blade that sliced through the zombie's skull, then scooped up the Crystal Core inside and delivered it to his own hand. With his move, everyone else was not to be outdone. In order to save bullets, the dense gunfire came to a halt, and everyone used their own abilities to harvest the remaining zombies and extract the Crystal Cores.
The zombies trapped in the swamp were all Basic-level Zombies with weak abilities, plus a small number of Level 1 Zombies. Their strength was not high to begin with, and being trapped in the swamp, they had no chance of escape. Moreover, because all the zombies were struggling, they made the swamp even more chaotic, sinking deeper and eliminating any possibility of escape.
Once Fang Yuxin and the others took action, it took less than ten minutes to kill off all the remaining zombies in the swamp, and all the Crystal Cores were extracted.
