"The underworld is empty, evil spirits in the human realm?"
Xu Changqing's soul trembled, quickly nodding: "That's right... otherwise, there wouldn't be any ghosts! Wait a minute, can the souls of mortals remain for seven days? That means..."
"That's right, look around nearby, if you're lucky, you might even be able to see Li Shitou and Wang Hu."
At the same time that Xu Changqing was exploring the underworld, Su Lu was also taking in the spirit world of this world.
"The three-layered Spirit World became one, but it's not that suitable for the existence of spiritual bodies... And, the barrier between the Underworld and the Human Realm is very weak, so weak that even Xu Changqing's soul could return back if there is a guide... No wonder all the evil spirits have run off to the mortal realm to cause chaos."