While the City Gods of the various states are part of the Underworld's system, in practice, they are governed by the Great Hao Divine Dynasty.
This is because the Great Hao Divine Dynasty itself is deeply intertwined with the Underworld.
According to historical records, the Underworld loses control every 12,960 years.
When that happens, ghosts walk in broad daylight, and Celestial Demons reawaken to devour all living things!
Only by achieving the Dao Realm can one contend with the Celestial Demons.
This event is known in history as the Great Calamity of Heaven and Earth.
To this day, this world has already endured nine Great Calamities of Heaven and Earth.
Each Great Calamity brings countless deaths and injuries, and even those in the Dao Realm risk perishing.
However, it also presents a heaven-sent opportunity.
The authority of the Underworld!
Every time the Great Calamity occurs and the Underworld loses control, its authority is left vacant.
