Improving his cultivation art within the Heavenly Secret Tower was indeed highly suitable.
There would be Great Powers offering guidance within the illusion realm, along with a time flow more than three hundred times faster.
It should shorten the time spent improving the cultivation art by more than a thousandfold.
Wang Daoyuan placed Hun Yin into the Spirit Pearl Space and said, "This Soul Demon Great Elder is already dead, so I have no way to search his memories.
"You have quite a knack for dealing with the Demon Race. Can you find anything in his memories?"
The Myriad Spirits Ancestor nodded. "Ordinary Demon Beasts would naturally pose no problem, but the Soul Demon clan can be considered a branch of the human race. They differ greatly from the Demon Race.
"Whether it succeeds or not, I cannot say for certain."
As he spoke, he summoned the Myriad Spirit Pagoda and took the Soul Demon Great Elder's corpse into it.
Soon afterward, intense Spiritual Power Fluctuations appeared atop the Myriad Spirit Pagoda.
Several dozen breaths later, the Myriad Spirits Ancestor smiled. "This Soul Demon has no physical body, so refining it is quite convenient."
"Unfortunately, before you killed him, he had already shattered his own primordial soul.
"Like ghost cultivators, Soul Demons store things such as memories within their primordial souls.
"With the primordial soul utterly shattered, the memories are gone as well."
The primordial soul was the soul origin located between a soul's brows, the most important thing within the soul.
Human cultivators simply could not control it, but ghost cultivators could shatter their primordial souls and unleash all their potential in a desperate battle to the death.
Damage to the primordial soul would greatly affect every aspect of a living being.
If it shattered completely, death was certain.