The apocalypse system arrived ten years earlier?

After the rain in the empty mountains, the weather turned to autumn late. Li Xiang waved his homemade Gaomi axe, and with one chop, a bamboo as thick as a bowl broke.
Suddenly, an ordinary pit viper jumped out.
Li Xiang lightly hooked the tip of the knife and cut the pit viper off by seven inches, and the hideous snake head fell to the ground.
System: "Congratulations to the host, you have killed the first-level alien beast Silver-striped Red-scaled Viper and received a surprise reward."
"What the hell? This ordinary pit viper is an alien beast?" Li Xiang pinched his chin and fell into deep thought, "...It should be the end of the world ten years later, and the invasion of evil spirits and demons will lead to its mutation, right? Well, I killed the alien beast in its infancy, and my merits are immeasurable."
...
A few years later, the entire earth fell into "eternal night", and Li Xiang's "secluded small farm" became the world-renowned "first refuge" and the "paradise" that everyone yearns for endlessly.
...
Pastoral writing, daily writing, and slow-paced writing against the background of the prelude to the end of the world .

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