As the Clan Leader of the Annihilation Clan, Xi Zhao was in charge of guarding the Space Tunnel left by the Underworld Venerate in the Annihilation Demon Nation. At that time, the place was not yet called the Heritage Site because the original intention of the Underworld Venerate was not to pass on all his knowledge to others; he only wanted to resurrect himself. After that great battle ended, the Underworld Venerate indeed suffered defeat and his defeat was a miserable one. His physical body was split into nine parts, and along with his soul, it was sealed within the nine pieces of the World Suppressing Stele. Xi Zhao, following the orders given by the Underworld Venerate, began preparing for his resurrection in secret.