The Game Warrior - Chapter 10: The world upside down.

There are two gods in the world, one lives in people's hearts and is dead. The other lives in reality and is alive.He is a person, he is named God. Yes, he is the one being talked about.He has returned from Hell.

A man was transported to Ancient China and eventually became a servant of a declining household without a male heir. He utilized his wits and modern knowledge to help the household and eventually become trapped in the sea of political turmoils of the period.

- Description from Novelupdates

As a transmigrator turned extraordinary creature of the human race, he found the world to be more colorful than he had imagined.To more easily access everything this new realm had to offer, he first needed a special resume. Then, he had to find the right place in a city perennially shrouded in fog to fill out an application, and the last and most critical step...— was to kill a chicken or catch a mouse.