After transmigrating into the cultivation world for three thousand years, Ling Chen ascended to the Immortal Realm, only to die tragically in the aftermath of an Emperor-level clash during the war between immortals and demons.
The Mirror of Time protected his remnant soul, and he was reborn in his homeland. But Earth was gradually becoming a post-apocalyptic world overrun by zombies.
He unexpectedly discovered that this apocalypse was part of an alien race's scheme to "raise gu": they were using it to breed slave cultivators, while also inciting war between immortals and demons in a bid to unite the myriad realms.
Carrying three thousand years of cultivation memories, Ling Chen defies the odds and cultivates anew amid the ruins of the apocalypse, carefully breaking the aliens' control over Earth at every step.
Once his power reaches its peak, he tears through the void and returns to the cultivation world, engulfed in the flames of war.
In this life, he is no longer an Immortal who must struggle to survive in the cracks.
He will stop the infighting between immortals and demons, resolve the enmity between the two realms, and unite the Immortal Emperor and Demon Emperor to form the strongest coalition army.
With Earth as his starting point and the Immortal Realm as his battlefield, Ling Chen wields the Mirror of Time and cuts down alien foes with his sword.
From apocalypse survivor to ruler of all realms, he will use the sword in his hand to end this conspiracy spanning the heavens and protect the people of both realms!
The setting is novel and the storyline is good. Highly recommended.