Li Shiming, through the Blood Covenant, sensed the state of the copper corpse; staying within the Ghost Domain for a maximum of one month, the copper corpse could advance to the next level of strength.
This was a progression from the Qi Refining Seventh Level to the Qi Refining Eighth Layer, a feat that cultivators, even with an abundance of resources, could not achieve without years of dedicated cultivation.
The improvement of Corpse Refining was inherently slow, but this slowness was under the condition of insufficient resources. With a large supply of resources, like using Third Grade resources for a Qi Refinement Realm copper corpse, the effects were naturally phenomenal.
And that was just a regular benefit of the Netherworld Ghost Realm Array aiding in Corpse Refining; the research of this Formation was intended to work in conjunction with Secret Techniques to modify Corpse Refining.
