Under the investigation of his spiritual power, he discovered that within this crystal ball, there was remarkably only a bone shield and a thick, scarlet book, its surface inscribed with the four pale silver characters of "Refining True Classic".
This crystal ball was also a rarely seen level of Sumeru treasure with an interior space that was even slightly larger than that of a Sumeru snail.
Caught by surprise, with a thought of his Divine Sense, he took the two items out from it.
The bone shield was palm-sized, entirely dark and glossy, with nine skull heads engraved on its surface. Enveloped by layers of black mist, ghostly faces seemed to emerge and disappear within the swirling black air, creating an extremely eerie sight.