Looking at the increasingly powerful Divine Blue Netherworld Fire, Zhu Fei felt a surge of joy in his heart.
He knew that his Divine Blue Netherworld Fire had already ascended to the fourth rank in the heavenly fire ranking.
Although the Divine Blue Netherworld Fire had not yet reached the top three, its power was already satisfactory to Zhu Fei.
He believed that with the current capability of the Divine Blue Netherworld Fire, melting ordinary Immortal realm refining materials would pose no problem, though high-level materials might still be challenging.
After all, Skyfire level flames are considered top-tier in the Cultivation World.
However, once in the Immortal Realm, ordinary Skyfire flames are not particularly remarkable.
In fact, some lower-ranked Skyfire flames can't even melt the most ordinary Immortal refining materials.
Imagine the role of a Skyfire flame that can't even melt the most basic refining materials in the Immortal Realm?
