I Built the Underworld, and You're Telling Me This Is the Primordial Era?!

Hong Min thought he was just another hard-working pioneer building the Netherworld from scratch in some backwater realm—until dragon souls, phoenix spirits, and qilin ghosts started flooding his gates. Then came the ancient witches. Then the celestial emperors. Wait… isn't this the legendary Primordial Era, where apocalyptic catastrophes wipe out half-sages like flies and Great Luo experts roam every corner? Suddenly, Hong Min's perspective shifts: every cataclysm is a business opportunity, every war a profit margin. The more souls fall, the stronger his Netherworld grows. In a world where god…