"You actually know about the White Bone Battle Formation?"
The First Generation Medusa looked at Xiao Yan with an unusual expression. At last, she could not help sighing softly. "The Xiao Clan truly deserves its place among the foremost Ancient Clans on the entire continent."
Medusa watched the two from the side. She understood every word they said, but she could not make sense of what they meant.
Seemingly noticing her puzzled gaze, Xiao Yan gave a faint smile and explained calmly, "The White Bone Battle Formation is a Heaven Tier formation from the ancient Formation Dao. It uses the bones of the dead as weapons within the formation, assembling them into an army of white bones.
"But besides requiring the bones of a great many powerful beings, this formation also demands that a powerful individual sacrifice their soul to become its formation spirit.
"Only with a formation spirit can the battle formation maintain its power indefinitely. However, ever since the ancient Formation Dao fell into decline, this formation has all but vanished from the world."
Only then did he understand why the First-Generation Medusa could not leave the center of this Ancient City. She had already sacrificed herself to become the spirit of this great formation.
Although she still retained her independent consciousness and was even stronger than before, the price was that she could not leave freely.
Of course, she could leave if she activated the White Bone Battle Formation at full power. But every such activation would not only cause severe wear to the Magical Beast bones within the formation, it would also consume a great deal of her remaining lifespan.
"So that's how it is." Medusa nodded gently, then turned toward the First Generation Medusa with a much more complicated look.
"So, Ancestor, you sacrificed yourself