Duan Deming and Yang Zhen refined the Companion Heavenly Fire in different ways.
Yang Zhen had turned the three types of Companion Heavenly Fire into his Destined Spiritual Treasure, whereas Duan Deming, it seemed, had refined them into a demonic spirit.
This approach to refining a demonic spirit was something Yang Zhen hadn't considered.
No, it wasn't that he hadn't considered it, but rather that refining such a demonic spirit was simply too cruel.
Yang Zhen could almost imagine the immense pain the Greenflame Nine-tailed Fox endured during Duan Deming's refinement, a process akin to soul extraction and essence stripping, its cruelty and agony easily imaginable.
"No wonder the Greenflame Nine-tailed Fox is so bloodthirsty and raging, damn it, your refining method is hardly different from that of a demonic cultivator."
Yang Zhen clicked his tongue in amazement, his face full of contempt.