The Supreme Sword Emperor, Starting from Half a Volume of the Heavenly Book

This is a world of spiritual energy. The cultivators control the spiritual energy and conquer the dungeons opened by strangers. And the Book of Heaven is rumored to be a treasure with one magical power per page. It is said that it was also turned into fragments and lost in the dungeon. People in the world have been fighting for the legendary five underground cities for hundreds of years. And what kind of waves will the supreme sword emperor who emerges from the sky cause in this troubled world?