Jiang Chen goes sightseeing in an ancient town and accidentally wanders into a traditional-style inn. He arrives just fine, but then finds he can't leave.
After being locked inside for no reason for five years, Jiang Chen decides that if they won't let him go, he'll become the owner of a shady inn.
Since you've come all this way, want to leave? Hand over all your stuff first!
From then on,
A mighty cultivator pushes open the door, asking for a room to shelter from heavenly tribulation; a mechanical lifeform, dragging its battered body, begs him to repair its core; a demon from the Abyss offers a soul contract in exchange for one peaceful night's sleep...
Before long, rumors spread throughout the myriad heavens:
"That innkeeper can bury the Heavenly Dao with a flick of his finger!"
"Shh... I hear even the Immortal Emperors and Demon Lords owe him for their rooms!"
Jiang Chen: "??? I'm really just an innkeeper!"
Also known as: "How I Became the Greatest Taboo in the Myriad Heavens with an Ordinary Human Body"
"I Opened an Inn Across the Myriad Heavens, but Became a Taboo"