The so-called Profound Spirit Mist Marrow is, in fact, a peculiar cultivation resource that has emerged from this secret realm space, extremely rare in the world!
This secret realm space is filled with layers of mist everywhere, but this is not ordinary mist, rather a type of Grotto Heaven Spirit Mist, exceedingly unique.
The ordinary Spiritual Mist permeating the secret realm space is naturally not very valuable; however, if countless Grotto Heaven Spirit Mist is refined to condense a single drop of Profound Spirit Mist Marrow, then it becomes extremely precious.
For this Profound Spirit Mist Marrow is classified as Tier Four Heavenly and Earthly Treasures. According to the information from the Celestial Pill Elder's legacy in Qi Chuan's mind, this Profound Spirit Mist Marrow can serve as the main material for a Tier Four Elixir, the Profound King Pill, which can accelerate cultivation for Nascent Soul True Monarchs.
