I Have a Genshin Impact Summoning System, and I'm Ruling the Apocalypse

Zombies are here. Could they be mutations caused by nuclear radiation? The Age of Cold: Why is it snowing in the scorching month of August? Plants are growing out of control. Can greenery really bury every trace of civilization? Animals are becoming monsters. Could these demon beasts evolve into ancient divine beasts? The corpse race has an emperor. Has a Corpse Emperor emerged among the king-class rulers? The Nine Human Cauldrons: So they aren't sacred objects meant to suppress the fortunes of the realm? Genshin Impact summons: Did tech geek Brother Wei save the world? In a zombie-infested apocalypse, the treasures left behind by the ancient Human Emperor, and myths overturned. Can a tech geek really change the world? This is a long story, so please let me tell it in detail. You're warmly invited to explore the secrets at the world's very core with me.