Variant biological system

This world is a system of mutated creatures!Do you think your buffalo is very ordinary? With my mutated biological system, the buffalo immediately becomes a ten-story-high savage giant!Are you still worried about your own strength? With my mutated biological system, it is not a dream for ants to swallow elephants.Xu Qianming, a humble and weak boy on earth, got this mutant biological system by chance, and finally reached the pinnacle of the universe step by step.

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