Emperor Returns As A Teacher?

“The Great Emperor + Invincible + Disciples + City”

Gao Yang, a man from Earth, accidentally traveled through the ancient world with his soul. After sinking, he discovered that this world treats all things as stupid dogs. Finally, Gao Yang rose up in the face of adversity, killed the God King, and destroyed the Holy Realm. After going through hardships, he finally became the eternal emperor.

But after becoming the emperor, Gao Yang found life boring! Finally, he returned to Earth and chose to become a teacher?