The Great Emperor's power dominates the world, claiming invincibility. Even a single character casually written by them contains an invincible will, revered as a supreme treasure.
However, throughout history, there have been many Great Emperors, yet very few treasures containing their invincible will have been passed down.
This is because Great Emperors are peerlessly invincible, almost not needing to refine treasures. Most Great Emperors are accompanied only by their Dao-proving weapons throughout their lives.
This time, the contemporary Zhantian Great Emperor left the character 'War' in his notes to provide an additional layer of protection for his descendants in the Eternal Divine Domain.