Gao Zhen flew swiftly through the boundless gray world.
The Underworld had no colors—or rather, it had only gray. But more accurately, there was not even a source of light here, so color was hardly a concept in the first place. If he had not held the Demon Extermination Sun above him as a light source, he would not have been able to see anything at all.
Of course, holding up the Demon Extermination Sun also meant releasing the fluctuations of his aura, effectively turning himself into a target. If illumination were all he needed, he would not have directly summoned his Martial Soul.
He had another reason for doing this: to dispel the Netherworld Qi.
Gao Zhen had been here for quite some time. With his Space Elemental Martial Soul, he had rapidly shuttled through this world and soon gathered a great deal of intelligence.
This was the Underworld. He apparently was not dead yet, nor had he become an undead skeleton. That much was reassuring.
After the Abyss War, he had remained on the Heaven Dou Continent as the War God Hall's representative, only to be inexplicably dragged into this place.
Based on his earlier investigations, he had determined that everyone on the Heaven Dou Continent had been pulled here alive, crammed into a small area roughly the size of half a province.
Though these people were not yet dead, most of them had been infected by Netherworld Qi.
The sign of Netherworld Qi infection was very simple: their colors turned gray, and they lost the colors that should have belonged to them.
Afterward, the Netherworld Qi would slowly erode a person's Life Force, seep into their soul, devour their memories, emotions, and bodily functions, until there was no longer any possibility of saving them.
At present, aside