Chen Nianzhi arrived in the depths of the Chaos Nest, set up an innate formation for protection, then began refining immortal pills.
Refining immortal pills from the flesh, blood, and inner cores of Chaos ancient beasts was not particularly difficult. The greatest challenge lay in the beasts' flesh being too powerful, requiring sufficiently potent true fire to refine it.
An ordinary early-stage Celestial Immortal would find this exceedingly difficult, but it was no problem for Chen Nianzhi, who had cultivated the Chaos Pure Yang Heavenly Fire.
He first took out the flesh, blood, and inner core of a ninth-rank lower-grade Chaos Nine-Tailed Mastiff, tempering them continuously with Chaos fire. In only three thousand years, he refined a batch of seven-revolution immortal pills.
"Not bad."
Looking at the seven immortal pills flying out of the pill furnace, Chen Nianzhi could not help but smile.
Seven-revolution immortal pills were greatly beneficial to innate bodies. This batch had produced seven pills; for an ordinary early-stage Celestial Immortal, refining all seven would likely allow them to touch the threshold of minor accomplishment.
Unfortunately, Chen Nianzhi's Innate Primordial Chaos Indestructible Body was far too powerful, consuming several times the resources required by an ordinary innate body. These few seven-revolution immortal pills were still not enough.
With that thought, Chen Nianzhi began refining again. Before long, he completed another batch of seven-revolution immortal pills, and this second batch yielded eight pills.
After refining two batches, Chen Nianzhi did not stop. He directly took out the flesh, blood, and inner core of the Nine-Tailed Mastiff leader and refined them once more. After ten thousand years, he produced a batch of eight-revolution immortal pills.
The flesh-and-blood creation contained within these eight-revolution immortal pills was several times that of seven-revolution immortal pills. Unfortunately, their success rate was much lower,