After searching carefully, they found quite a few Demon Beast corpses in the surrounding area that had not yet completely decayed.
A faint ghostly blue glow also emanated from these corpses.
No one knew how this ghostly blue glow had formed, but it had actually created a deadly trap here.
Human cultivators who came seeking spirit items did not dare remain here for too long, so they knew little about White Bone Gully.
Wang Daoyuan had always disliked unnecessary complications. No matter how lethal this place was to Demon Beasts, it had nothing to do with him—not even worth a single Spirit Stone.
Human cultivators who dared come here to seek treasure were at least in the middle or late Nascent Soul realm.
Even if they could not completely ignore the glow's effects as he could, they would at least have a chance to flee.
White Bone Gully's unique environment had given birth to a sixth-rank yin-attributed spirit item capable of tempering a Nascent Soul and transforming it into a Primordial Spirit—Unyielding Bone.
This item had originally been a Demon Beast's bone, chiefly bones where a Demon Beast's essence blood had gathered.
For example, the fangs of tiger-type Demon Beasts, or the bones in the wings of demon birds.
These were the bones Demon Beasts had used most often in life, as well as their most important bones.
Nourished by essence blood year after year, they were naturally extraordinary and more likely to become Unyielding Bones.
The greater a Demon Beast's cultivation and the tougher its physical body, the more likely it was to form an Unyielding Bone.
Within White Bone Gully's special environment, such bones did not easily decay. Instead, they could absorb large amounts of Yin Energy and other forms of energy.
Over long years, a small number