Yang Jing had been observing the Other-Transformed Self-Free Celestial Demon's escape route the entire time it was trapped, anticipating its retreat into the Demon Realm.
In their last battle, he had discovered the secret of the Other-Transformation Freedom Demon Heart Escape. If used directly within the Nine Heavens World, the strain on the Other-Transformed Self-Free Celestial Demon was immense. The first time the demon had vanished into thin air that day, its aura had weakened almost instantly, and the distance it moved wasn't very far.
The second time, when it swapped places with the Black Heaven True Demon, the weakening of its aura was much less severe, and the distance it traveled was much greater.
Therefore, Yang Jing deduced that if the Other-Transformed Self-Free Celestial Demon wanted to flee again using the Demon Heart Escape, its most likely choice would be a place where Celestial Demons gathered near the Demon Realm.
