Low Mountain Courtyard.
Chen Mu stood before a waist-high water vat.
The vat was filled with thick, grayish-brown mud slurry.
The Hundred Mile Qi Seal Secret Art activated, and invisible Strange Force poured into the slurry, slowly making it rotate.
Strands of Spirit Armor Black Smoke seeped into the vat, gradually evaporating the moisture and turning the slurry into something like modeling clay.
He then controlled it to float up, enter wooden molds, and be pressed into pills.
After working for an hour, Chen Mu looked at the nearly two thousand Calming Spirit Pills spread across three wooden racks and could not help feeling fortunate. "Good thing I have Hundred Mile Qi Seal. Otherwise, this job would really be hard to do."
"Unfortunately, the Heavenly Demon Rebirth Method can easily drive one mad." Chen Mu shook his head helplessly.
"Besides, even if I wanted to practice it, I couldn't find any Heavenly Demon Pills refined with Yin Soul Monsters."
He had asked Le Yang'an, the owner of Imperial Quality Pavilion.
Different Heavenly Demon Pills required different kinds of Heavenly Demon essence blood.
Even legendary creatures like dragons and phoenixes existed, yet he had never heard of a Heavenly Demon Rebirth Pill made from Yin Soul Monsters.
"Bai Miaojin?" Chen Mu formed a faint guess.
"Perhaps coexisting with a Yinhun is the condition for cultivating the Yinhun version of the Heavenly Demon Rebirth Method."
That condition was truly harsh.
"The Five Ghosts Yin Soul probably won't cut it."
Chen Mu thought of the Five Ghosts Possession Great Method.
Once he used it, he would turn into a hideous little blue man. That was hardly a normal manifestation of coexisting with a Yinhun.
Moreover, the Heavenly Demon Rebirth Method had a limit. If the essence blood within the Heavenly Demon Pill was