Chen Nianzhi looked at the Yin-Yang Taiji Pill before him and could not help but fall into thought.
A thousand years ago, Chen Nianzhi had taken a Pure Yang Immortal-Boosting Pill. Logically speaking, he should not take another immortal pill that increased cultivation for the next three thousand years.
Only because Chen Nianzhi's foundation was deep and solid, coupled with a pair of mid-grade natal immortal treasures tempering his mana, could he take it like this. Had it been an ordinary immortal, such consumption would likely have damaged their foundation.
But even for Chen Nianzhi, taking this Yin-Yang Taiji Pill would make his mana more unstable. For a long time to come, he would be unable to take any more immortal pills that increased cultivation.
If he risked taking another one, it would certainly damage his foundation, greatly increasing the difficulty of future breakthroughs.
The reason Chen Nianzhi was so eager to take the Yin-Yang Taiji Pill was to accumulate his mana to completion as soon as possible and strike for the fourth level of Ascendant Immortal.
Once he broke through to the fourth level of Ascendant Immortal, Chen Nianzhi's strength would enter a period of rapid growth.
The three realms of Ascendant Immortal were, respectively, the Profound Mystery, Creation, and Heaven-Scaling realms.
Among these three realms, there was a saying: cultivate immortal essence in the Profound Mystery realm, replenish one's foundation in the Creation realm, and comprehend the Great Dao in the Heaven-Scaling realm.
Cultivating immortal essence in the Profound Mystery realm naturally meant cultivating one's immortal essence to perfection. Immortals progressed fastest in cultivation at this stage, needing only to continuously accumulate immortal essence.
The Creation realm, on the other hand, was for replenishing one's foundation—making up for one's innate shortcomings.
Cultivators who became immortals through their physical