The Blood Spirit Saintess was simultaneously devouring Li Ji'an's Primordial Yang with her Primordial Yin while the Thousand Mechanisms Blood Attraction was activated to directly seize Li Ji'an's Life Core Essence Origin.
The Life Core Essence Origin is the root of the Dantian, the beginning of the human body, and also the storage place of one breath of Primordial Qi before birth.
The Primordial Yang Fire required for the Phoenix Nirvana can only be fueled by this.
But in order to obtain this origin, one must first seize the Primordial Yang, and must actively cooperate in the initial stage; otherwise, no matter how high the cultivation, it cannot be forcibly taken.
The Blood Spirit Saintess had extracted the essence core from others no less than ten times in her life. Besides the eight times needed for Nirvana, there were a few times outside the centennial node, making her very confident in this process.
