Sensing the slight rise in the Main Soul's aura after its meal, Hun Changqing nodded faintly. Although that soul had been of extremely poor quality, the improvement after the Main Soul devoured it was surprisingly substantial.
Previously, Hun Changqing's supply of souls had been painfully scarce. Every soul he had plundered from the Soul Palace was of exceptional quality, prime material for refining Yin Demons, and he could not bear to use them as feed for his Yin Demons or Main Soul. Now that he had fed the Main Soul an inferior soul for the first time, he had not expected such a marked effect. Excitement immediately stirred within him. If he had enough souls for nourishment and fed his Yin Demons continuously, would his Yin Soul Banner not advance several stages in a short time and undergo a qualitative transformation?
But a headache soon followed. Refining Yin Demons required souls, and feeding them required souls as well. That meant he needed a staggering quantity. Even setting aside whether the Netherworld Hall might run into trouble competing with the Soul Palace under such a similar name, the sheer amount of work needed to gather his souls was beyond a single Netherworld Hall. Even if it slaughtered every expert above the Dou Emperor level on the entire Northwest Continent and extracted their souls, they would be no more than a drop in the ocean to Hun Changqing.
That was also why the Soul Palace paid so little attention to the Northwest Continent and had established only one Branch Hall there. It was barely a mosquito's leg of meat. Hun Changqing estimated that he would have to plunder more than ten Branch Halls in the Central Plains to gather all the souls he needed-and they would have to be Earth Fiend Halls,