Any treasure that gains sentience can be deemed a Spiritual Treasure.
Spiritual Treasures are not like the ordinary Magic Artifacts or Magic Treasures, ranked broadly according to their power.
The grades of Spiritual Treasures cannot be clearly divided.
If one must find a way to distinguish among them, it can probably be done based on the degree of their sentience.
Of course, Spiritual Treasures are rare. To be fortunate enough to possess one is a blessing from heaven.
The Sea Stabilizing Divine Iron, of such a grade, clearly surpasses standard Spiritual Treasures.
Hence, Lu Wufei always treated it with great indulgence.
Because of this, Sky-Holding White Jade Pillar, who did not like to stay in the Divine Power Space, was allowed by Lu Wufei to reside inside his sleeve, together with the "Beauty Fighting Colored Vase" that also refused to enter the Divine Power Space, imitating the pillar.
