Just a moment ago, one of Little Zi's female demon avatars stumbled upon a phony dwarf. The imposter bore the physique of a dwarf, but there was no way to disguise the unique wave of his soul. All dwarves possessed a distinctive soul, imperceptible to humans and dwarves alike. But demons were different, as they were energy creatures centered around the soul. They could effortlessly discern the unique soul signature of each being.
And thus, amidst a group of dwarves, the human soul stood out glaringly.
Following that, Little Zi sent out all thirteen of her avatars who began swarming the entire Furnace Fortress. They set out to search for any suspicious targets.
Eventually, including the initial phony dwarf, the demons found three suspects in total.
They were all stationed at different posts. None of them were in charge of armored combat. The demons marked each of them uniquely, thus ensuring Little Zi could locate them instantly, anywhere they went.