Second floor, quiet chamber.
Yang An poured his own Mana into the completed formation.
The moment the Mana entered the formation, the intricate lines on the ground seemed to swell, bulging like foam.
In only a few breaths, the formation that had originally consisted solely of blood lines seemed to transform into flesh and blood.
Following the cultivation method of the Shell Nurturing Technique, Yang An tossed the prepared materials into the formation one by one.
The materials quickly shattered upon falling into the formation and fused with it.
Soon, once the formation had combined with all the materials, it reverted to its original appearance on the ground, as if nothing had happened.
An utterly soul-piercing rush of soreness traveled from the top of his head to the soles of his feet. Yang An pulled the True Marrow Feather from his back and gently placed it within the formation.
His lips moved in constant murmurs as he recited the incantation exactly as recorded in the cultivation method. There could not be the slightest error or omission.
Should he make a mistake, the attempt would very likely fail, and he would suffer a certain degree of backlash.
Fortunately, the process went exceptionally smoothly without mishap. Very soon, the formations seemed to come alive, all attaching themselves to the True Marrow Feather. As though possessed of consciousness, they burrowed into it.
At that very moment, Yang An suddenly sensed Mana flowing within the True Marrow Feather. Though it was only a faint trace, it continued changing and growing stronger.
Although the True Marrow Feather was part of his body, as a bodily component, it was still in its juvenile stage and could only serve as a strange weapon.
Yet once he used the Shell Nurturing Technique to refine it into his own