Chen Ye, a history student, transmigrates to another world. His response is: “I have a happy family. I'm not an orphan. Can you send me back?”
With no choice but to search for a way home, he takes the opportunity to experience the customs and culture of another world. Then he discovers that the transmigrators who came before him had no sense of propriety whatsoever.
“You're telling me your ancestor wrote ‘Bring in the Wine,’ right?!”
When Chen Ye sees a clan patriarch shouting, “My sword and shield!”, he nearly laughs himself to death.
(The protagonist will not build a harem.)