Xu Chunniang took out more than a dozen small porcelain bottles. Inside them were the shattered souls of those devil cultivators.
These dead souls were far less valuable than living ones, and their soul power had diminished as well.
But whenever she killed, she never allowed any loose ends. Even if living souls were more valuable, dead souls were more reliable.
Souls contained vast amounts of the deceased's memories and endless desires. Only by clearing away these impurities could she obtain pure soul power.
Absorbing soul power was more troublesome than absorbing devilish qi.
Turbid devilish qi would grow heavy and naturally separate itself from pure devilish qi.
Yet the impurities within a soul were mixed together with its soul power. They had to be thoroughly removed before pure soul power could be obtained.
Xu Chunniang rummaged around and found a pill furnace from one of her storage spaces. She poured all the shattered souls from the dozen-odd porcelain bottles into it.
Then, she summoned Netherflame and began refining the pill furnace.
The long saber on her body and Netherflame had both come from Ghostly Soul Valley.
Those living in Ghostly Soul Valley were all weak little devils.
But on the very first day she entered Ghostly Soul Valley, she had sensed that it was anything but ordinary.
This was the rebirth ground for all yin devils of Demon Cloud Continent. The laws throughout Ghostly Soul Valley were self-contained, like a small world independent of the outside.
Deep at the bottom of the valley, there had to be a treasure capable of drawing in and suppressing yin devils, or Ghostly Soul Valley could not have continued operating normally.
Thus, after breaking through to the Soul Transformation stage, Xu Chunniang had not chosen to climb out of Ghostly Soul Valley immediately.