Light-Speed Cultivation

After all, it was a Fourth Grade Heavenly Immortal. Its essence, qi, and spirit had already undergone transformation, steadily surpassing Song Ankang's by a level and carrying an innate degree of resistance. Thus, Song Ankang found the initial devouring somewhat difficult—far less smooth than devouring a Fifth Grade Earth Immortal.

However, as time passed and he gained experience and technique, devouring became much, much easier.

Digestion was also rather troublesome in the beginning. It was not so easy to digest; only after finding the right method could he speed it up.

Fortunately, with Song Ankang's current essence, qi, and spirit, he truly could devour a Fourth Grade Heavenly Immortal across an entire major realm. The efficiency was quite good, and the quality of a Fourth Grade Heavenly Immortal's essence, qi, and spirit far surpassed that of a Fifth Grade Earth Immortal.

After devouring so many Fifth Grade Earth Immortals in the past, he could often make use of less than one part in ten of their essence, qi, and spirit. But when devouring Fourth Grade Heavenly Immortals now, he could use at least nearly half of it.

Feeling that pure and immense essence, qi, and spirit, Song Ankang nodded in satisfaction. If nothing unexpected happened, after devouring this Fourth Grade Heavenly Immortal, his Inner World would expand to ten million square kilometers, reaching the limit of a Fifth Grade Earth Immortal.

What he needed to do next was carefully temper and consolidate it, preparing for his later attempt to break through to the Fourth Grade Heavenly Immortal realm. At the same time, he would devour a few more Fourth Grade Heavenly Immortals and turn the origin qi in their bodies into nourishment for himself, storing it within his Inner World.

As time passed, this Fourth Grade Heavenly Immortal of the