The Profound Soul Crystal was actually a material of immense value to Spirit Severing cultivators. However, only cultivators at the peak Spirit Severing stage could use such a material.
If a cultivator did not advance to the Spirit Severing realm, it could be said that he had no use for this material at all, let alone any reason to collect it.
Even if he advanced to the Spirit Severing realm, if he found it difficult to reach the peak in his lifetime, the material would still be utterly useless.
Even if this item were placed in the Marketplace for exchange or auction, ordinary Integration stage cultivators would generally show no interest in it. Spending a considerable sum to obtain it would merely leave them with something to be stored at the bottom of a chest. If Spirit Severing cultivators learned of it, it would definitely bring trouble upon an Integration stage cultivator.
As the saying went, an ordinary man was innocent, but possessing a jade made him guilty.
Although this item was extremely rare and precious even in the Spirit Realm, it was not rare to the same degree as the Blood Exhaustion Flower. It could only be said to be a precious item that was exceedingly difficult to find.
Even in the Human Realm, it likely existed. However, even if someone took it out and placed it in a Marketplace there, no one would spend spirit stones on it. That was because the ancient records had never described any method of using the Profound Soul Crystal.
That was also why Qin Fengming had never encountered a Profound Soul Crystal despite attending so many auctions.
The reason Zhao Zhinan and Mei Tianzu had confidently allowed Qin Fengming to enter Black Mist Island specifically to seek this item for them was