Somewhat unexpectedly, what the jade slip contained was not the secret art Fu Qingshan had used to enhance his combat strength, as Liu Yu had imagined.
Instead, it was a secret art that increased cultivation through blood sacrifices. It could even help break through bottlenecks, including the Spirit Transformation Bottleneck.
The secret art was called "Blood-Burning Spirit Transformation."
Based on the principles of "essence refining into qi" and "qi refining into spirit," it used a formation ritual to convert vast quantities of flesh-and-blood essence into attribute-free origin energy for refinement, thereby increasing cultivation.
This Blood-Burning Spirit Transformation is most likely genuine and workable.
But it certainly is thoroughly demonic.
As he read the information in the pitch-black jade slip, a trace of wonder flashed through Liu Yu's eyes. He marveled at the ingenuity behind its creation.
With his current cultivation, insight, and accumulated knowledge, he could naturally make a preliminary judgment of the secret art's authenticity at a glance.
He only needed to conduct a few experiments to determine whether it worked.
Through a formation ritual, vast quantities of living beings' essence are refined into attribute-free origin energy to increase cultivation.
That raises cultivation and can even help break through bottlenecks to a certain extent.
With this secret art, there is no need to painstakingly search for spirit herbs or seek out spirit pills.
Simply slaughtering large numbers of low-level cultivators would be enough to increase cultivation.
It truly is a demonic secret art through and through.
Putting the jade slip into his storage ring, Liu Yu looked at the Demonic Qi remaining within the azure fireball as this thought crossed his mind.
Blood-Burning Spirit Transformation worked across several realms and could be used all the way up to Spirit Transformation.
No wonder Fu Qingshan, once merely an ordinary rogue