In the darkness.
Twenty Spirit Light Threads glowed like waterweed in a deep pool, giving off a hazy light.
Their light gathered into an image before everyone's eyes.
A battlefield.
A place of endless slaughter.
Humans charged across an empty wasteland.
They swiftly collided with something, but those things were invisible. No one could see them.
The human cultivators fought them.
Swords stabbed into empty air, drawing blood.
Mystic Arts blasted vacant ground, raising waves of wails.
On the human side, invisible things often took heads and lives.
Anyone who knew nothing about Ghost Entities would have been scared out of their wits by the eerie sight!
Inside the Grand Hall.
The former Crown Prince's voice sounded again:
"I studied the lessons of the Nine Hells Era's defeat and found that the most important was this: humans couldn't see them."
"During that Epoch, humans had already thought to use Magic Arrays to ward off Ghost Entities."
"But they still failed."
"Why?"
"I think it was the Magic Arrays."
"Maintaining a Magic Array requires Spirit Stones, and war consumes far too much. Even if the arrays stayed active and held the Ghost Entities back, their power would eventually run out. Then humanity would have no choice but to fight invisible Ghost Entities for their lives."
"So..."
"The most important thing was to let humans see Ghost Entities."
"But that was impossible."
"I went back through history, consulted countless ancient texts, explored Ruins, and searched for clues."
"Finally, in a tomb, I discovered a Mystic Art called Azure Heaven Draws Yellow Springs."
Azure Heaven Draws Yellow Springs!
Xu Yuan's heart jumped.
Damn it. I used a blank Historical Side Quest to learn the complete Azure Heaven Draws Yellow Springs in the Previous Era.
Don't tell me you dug up my tomb.
The