Apocalypse + Suspense + Wit + No System + Ordinary Flow + Mutant Beast + Cold-blooded + Beauty + Base + Humanity

This world does not have fancy superpowers, nor does it have the mountain-moving and sea-filling in the fantasy world, nor does it have the strange and bizarre ultra-modern civilization. What it has are crises everywhere, and what it tells is just the story of the little people struggling to live in the oxygen doomsday, acid rain doomsday, insect swarm doomsday, migration doomsday, poisonous miasma doomsday, evolution doomsday, and murderous doomsday...

No saints, no heroines, ruthless and ruthless, with a wicked heart that smokes smoke, he sweeps across the wilderness. Zuo Dao, carrying a system, travels through time and space as a snake, arriving in this world where the strong prey on the weak. To survive, he is accompanied only by endless loneliness and life and death. His life motto is to enjoy comfort for a while, to survive for a day.