Zhao Xiu's expression changed slightly as well.
"Why can't they be killed?!"
Zhao Xiu personally witnessed a mutant being sent flying by a barrage of bullets, with dozens of holes in its body! If it were any other known mutant of the same species, it would already be dead.
However, after it landed on the ground, it actually rolled on the ground, and the wounds on its body quickly healed. Then, it rapidly attacked the entrance of the mining area.
The recovery ability of the mutated beast was shocking!
Cheng Han's expression was also solemn. He quickly took out an explosive bomb and threw it at the mutated beasts on the field.
"Boom!"
The bomb exploded with a loud 'Bang'!
It was still ineffective!!
The explosion blew up a small group of Lickers in the surroundings. However, they rolled on the ground again and struggled to pounce toward the entrance of the mining area.
"What's going on?"
