Li Shiming and Li Yuanba were both doing the same thing: refining the Boundless Immortal Fire.
However, Li Yuanba did not conduct the Refining Ritual himself. Instead, he gave the compensation obtained from the Boundless Sect—the "Boundless Immortal Fire"—to Red Devil.
Red Devil was skilled with flame. From the power he displayed when using Boundless Flame Peak, one could see his talent for controlling fire.
If Li Yuanba refined the Boundless Immortal Fire himself, it would not improve his strength by much.
He was not good at fire attacks. What he used most was still Chaos Sword Intent.
Although he used the Eye of the Storm, he had infused this supreme treasure with Chaos Sword Intent, making the Wind Blades released by the Eye of the Storm resemble Sword Light even more.
The Flame Refinement Secret Technique he had obtained was something the Boundless Sect had taken out so that Li Yuanba, a Peak Great Cultivator, could refine the Boundless Immortal Fire.
The Boundless Sect had also had its considerations in being willing to hand over the Boundless Immortal Fire.
The Boundless Sect also knew that even if Li Yuanba refined the Boundless Immortal Fire for his own use, it would not increase his combat power by much.
And with the Boundless Immortal Fire being as high as fifth grade, it was precisely enough to make up for their sending a Half-Step Great Power to assassinate Li Yuanba.
Through his Contract connection with Red Devil, Li Yuanba passed the Flame Refinement Secret Technique to him.
Red Devil's intelligence was not low at all. Were it not for the restrictions of the master-recognition Contract, Red Devil could have become an independent, highly intelligent creature.
After reading the Flame Refinement Secret Technique, Red Devil swallowed the Boundless Immortal Fire in one gulp.