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However, the origin of the Heavenly Demon Bone Umbrella was somewhat special, and Su Nan was not certain whether replenishing it with too much essence and blood would lead to any unforeseen incidents.
But this thought flashed by, and he didn't pay it any mind.
After all, he had complete control over the Heavenly Demon Bone Umbrella now, and he wasn't worried about anything, not to mention he had the ability to foresee the future.
Upon entering the Tiangong Pavilion, he first followed the plan and purchased four Demon Sutras, then bought many demon beast suppression sites.
By this point, Su Nan's reserves of king-level demon essence blood were completely depleted.
Lately, he hadn't hunted many king-level demonic beasts; the ones he had hunted for his tasks were previously captured soul-devouring demons in the Divine Ruins.
When those demons were slain, they left behind no corpses.
Wanting to continue exchanging for essence and blood, he now had no surplus left.