A White Bone Fiend at middle Qi Refining and an Entry-Tier Yin Soul Banner were merely the most basic requirements for combining them into a White Bone Yin Demon Banner. Even then, the resulting magical artifact would only just qualify as Entry-Tier. It would still need to be nurtured with spirit bones and yin souls before it could advance to the second tier.
According to the book, however, combining a White Bone Fiend at Qi Refining perfection with a Yin Soul Banner bearing ten or more spirit inscriptions would very likely produce a second-tier White Bone Yin Demon Banner.
But neither a White Bone Fiend at Qi Refining perfection nor a Yin Soul Banner with ten spirit inscriptions could be nurtured easily.
Over the past dozen years or so, the thirteen White Bone Fiends in his possession had barely advanced from early Qi Refining to middle Qi Refining. The Yin Soul Banner had fared somewhat better, growing from seven spirit inscriptions to nearly nine.
Still, even another ten years of nurturing might not be enough to bring both to the level required for a second-tier White Bone Yin Demon Banner. It seemed he would have to find another way to raise their tiers.
As Wang Yu pondered this, he walked over to the White Bone Altar in a few strides and tossed the Yin Soul Banner in his hand into the air.
The White Bone Banner immediately returned to its original size and floated above the altar once more.
Wang Yu circled a nearby White Bone Fiend several times, then formed a hand seal and muttered an incantation. Opening his mouth, he spat out a cloud of Red Light that completely enveloped the White Bone Fiend before him.
Then he stamped his foot.
With a boom, the expanse of white