The Nine Provinces Immortal Dynasty basically ruled the entire Nine Provinces Domain. It was high and mighty. Even the top factions had to lower their heads in front of the Nine Provinces Immortal Dynasty.
In addition, in the legends, the Nine Provinces Immortal Dynasty had an Immortal Ancestor Dragon Vein to stabilize the light from providence and ensure that it would never decline. The Primordial Demon Sect secretly investigated and spent countless time and resources to destroy the Immortal Ancestor Dragon Vein of the Nine Provinces Immortal Dynasty.
A thousand years ago, Wusha and the others had discovered that one of the 129,600 providence nodes of the Immortal Ancestor Dragon Vein was hidden in the Wind Cloud Sect. That was why they had set up and planned in secret.
Three days later, an explosion sounded.