The Eclipse Heaven Nether Prison Canon was a physique-type Thirteenth-Order Low-grade cultivation technique, but it only had the cultivation method for the Thirteenth-Order Early-stage, so even among Thirteenth-Order Low-grade techniques, it counted as a bottom-tier existence.
All along, Chen Fei had been integrating Primal Fiend techniques into his physique inheritances, because this was more concealed. Other cultivators would find it very difficult to see that it was a Primal Fiend inheritance; at most, they would feel this physique technique was somewhat extreme.
As for essence energy techniques, Chen Fei could wait for the inheritances within the Transformation Sect.
And Chen Fei should be able to use a physique technique in a while.
A Thirteenth-Order Primal Fiend Source Spirit Essence letting Chen Fei's essence energy realm break through to the Void True God Realm was naturally unrealistic, but letting Chen Fei's Divine Soul enter the Thirteenth Order first was very much possible.
Once Chen Fei's Divine Soul transformed to the Thirteenth Order first, his physique could attempt a Forcible Breakthrough. At that time, the Thirteenth-Order Eclipse Heaven Nether Prison Canon would come in handy.
"Simplify!"
"Simplifying Eclipse Heaven Nether Prison Canon... Simplification successful... Eclipse Heaven Nether Prison Canon → Heaven Opening Devil Art!"
A section of the Top-Grade Immortal Crystals floating around him vanished, and the new technique's simplification succeeded.
The Eclipse Heaven Nether Prison Canon's current Proficiency was at thirty percent of the Proficient Realm. It was clearly a Thirteenth-Order inheritance, yet its Proficiency was already at the Proficient Realm; from this, one could see the magnitude of the increase.
Chen Fei did not immediately cultivate the Eclipse Heaven Nether Prison Canon. Instead, he took out that portion of Thirteenth-Order Primal Fiend Source Spirit Essence, then wrapped it in essence energy.
Chen Fei did not immediately refine the Source Spirit