Although Qing Lin can prevent these mutant creatures from leaving, it can't constantly watch over them, and Qing Lin can only command those special mutant creatures that possess some intelligence. As for the ordinary mutant creatures without brains but with combat power comparable to special mutant creatures outside, Qing Lin has no solution for them.
Additionally, there are some special mutant creatures with a bit of intelligence but not very high intelligence, who always can't resist the instinct to attack humans. Therefore, all humans who strayed into this area have died at the hands of these mutant creatures. Qing Lin is powerless in this regard; it can only ensure these mutant creatures do not leave here, and those special mutant creatures with enough intelligence do not attack humans.
