Spirit Lake could completely be called the "Spirit Sea."
This enormous inland lake stood on the shore and stretched as far as the eye could see. Even with the aid of the Mystic Eye Technique, its boundaries could not be seen.
Its waters were clear and emerald-green overall, yet the depths below were bottomless, revealing only a stretch of darkness.
From time to time, many spirit fish could be seen swimming through the water. Looking carefully downward, one could even see numerous fish-type demon beasts wandering in groups, patrolling the entire Spirit Lake like soldiers.
Spirit Lake was the place with the richest spiritual energy in the Ninghai Thousand Provinces. Calling it the ancestral spiritual-energy vein of the Spirit Sea Thousand Provinces would not be an exaggeration.
By rights, such a treasure land should have been controlled by the ruler of the Ninghai Thousand Provinces.
Yet several tens of thousands of years ago, a great demon that had grown powerful came to the Ninghai Thousand Provinces and seized this treasure land.
That great demon's power was unfathomably deep. It was said to be only one step away from becoming a Great Mystic Art User.
As a result, even Town Sea Sect, the ruler of the Ninghai Thousand Provinces, had no choice but to hand over Spirit Lake and allow it to become that great demon's dao arena.
Furthermore, Town Sea Sect had signed a pact with that great demon. Neither side would interfere with the other.
Spirit Lake became the great demon's dao arena, while that great demon would not interfere with the affairs of the Ninghai Thousand Provinces.
The Ninghai Thousand Provinces ruled the entire region, but could not privately interfere in Spirit Lake's affairs.
This treaty had once received the approval of the former Seven Nights Divine Sect.