Perhaps it was the atmosphere of this place.
The disciples felt their spirits dampen as they gazed out at the vast, desolate landscape. Those who had been chatting moments ago fell into a sudden, heavy silence. They cast their divine senses out to survey their surroundings. The remains of the buildings suggested that this place must have once been prosperous, yet now, it was littered with nothing but bleached bones.
"Master, there are too many wronged souls here," the Phantom Spirit Fox said, its perception the keenest of them all. "They refuse to move on to reincarnation."
Chapter 506