Zhang Yu looked at the newly purchased Resentful Killing Technique on his phone, flipping through the content of this cultivation technique.
This top-tier expert-level technique, due to its requirement of resentment energy for cultivation, had its price plummet and was now purchased by Zhang Yu for 500,000.
At this moment, after carefully reading through it, Zhang Yu planned to practice according to the method described.
He touched the work badge hanging from his chest, on which the words "frontline employee" were written, constantly absorbing the resentment energy swirling in the air.
This badge-like object was actually the external Spirit Root — the Resentment Spirit Root — sent by Zhou Chechen.
It is said to be in the shape of a badge because it's easier to store resentment energy this way.
As Zhang Yu channeled mana into the Resentment Spirit Root, the whole world instantly transformed in his perception.
