Inside the Demon Graveyard.
He first performed transference on the Four War Gods' demon souls, then tossed their pure soul forms into Flying Demon Moth's Inheritance Vessel.
After that series of operations:
Li Xia's soul strength increased slightly.
Four portions of demon power accumulated inside the Inheritance Vessel.
Including the "tolls" collected day and night throughout this period, the demon power essence accumulated inside the Inheritance Vessel was quite substantial.
(In the Sengoku Era, large numbers of humans and demons died every day. According to the basic laws governing their souls, some mysterious force drew them across the sky above this Demon Graveyard, toward the depths of the Underworld to be reincarnated, or to descend into Hell or something of the sort. Placing the Inheritance Vessel, which specialized in collecting soul energy, and planting an incarnation of the Tree of Ages here was equivalent to setting up a tollbooth halfway along a highway that charged everyone indiscriminately.)
(The Island Nation was currently in the middle of the Sengoku Era, with a population of around ten million. Even without accounting for war or demon attacks, the natural human death rate alone meant at least a hundred to two hundred thousand people died each year. Accounting for demon attacks and warfare, the death toll would only be higher.)
Thus, although less than a month had passed, the demon power essence collected inside Flying Demon Moth's Inheritance Vessel was already enough to cultivate a great demon.
Why had the Previous Flying Demon Moth been driven off the continent?
(One reason was probably that his methods were far too greedy. Another was that stripping dead souls of their soul power before sending them to the Underworld for reincarnation would severely affect the talents of their reincarnated selves. Decades or a century later, this land