C600 The Underground Mutant Was Lucky to Have the Blueprint(2)

The tempered glass that could withstand the relentless pounding of so many mutant zombies without so much as a crack was of impressively high quality.

Tang Bing took a quick look and estimated that there were roughly twenty to thirty mutant zombies in the room, all uniformly dressed in the institute's white lab coats, complete with gas masks and gloves. This left Tang Bing somewhat bemused