een different races and humansIn the face of aliens, humans are nothing but ants in a cage, fighting a desperate battle.And humans were also divided into ten layers, obviously divided by strength leve...ightly. He looked up at Fang Yu and then quickly lowered his head again."Master, what do you mean by that" Chen Ye asked."Then I'll be straight with you," Fang Yu said, "when I treated your injuries b...