"Charming Heart" style spells create Illusion Realms that varies from person to person, all distinct from one another.
Some magic relies on drawing out the fears within the heart of the person affected, while others depend on the imagination of the caster.
Right now, the one Huang Donglai is using obviously belongs to the latter.
And since imagination is based on cognition, and Huang Donglai's cognition is far beyond this era, so... he had created an Illusion Realm that the corpse-fiend simply could not comprehend.
From our modern perspective, the Illusion Realm that the corpse-fiend is in is no longer Earth, but an extremely harsh alien planet, where just breathing the air could make one feel as if their lungs are burning.
Of course, this is just the beginning. The real terror began when an indescribable creature entered the corpse-fiend's line of sight...
