In fact, Leng Ruyu had never been able to figure one thing out.
How exactly did Su Xiyue dispel that trace of purple fire?
Her purple fire was extremely special—a senior from the Demon Sect had obtained it in a secret realm, and from then on, no one was able to tame it, let alone refine it.
Only she managed to do it!
Although she was only at Foundation Establishment, even Golden Core Cultivators couldn't extinguish that unique purple fire.
This was proven in practice.
However, Su Xiyue was completely unaffected by the purple fire—she even unleashed her peak combat strength that day in Lin Xian City when she faced her down.
Leng Ruyu personally witnessed Su Xiyue using a forbidden technique!
Before, she hadn't understood how strange and persistent the black qi was, but now she'd experienced it firsthand.
In other words, at that time, Su Xiyue had three fatal dangers hanging over her!
