Song Yan pondered for a moment, then began carefully studying this section.
"Qi of utmost Yin originates in the underworld?"
It eroded the Dao Foundation, seized the Divine Soul, and clung so tenaciously that ordinary Spiritual Power could hardly dispel it-
The medicinal pill mentioned in this Jade Slip was called the Thunder-Hanging Pill, and its Pill Formula was included.
However, it also stated that taking ordinarily refined Thunder pills, including the Thunder-Hanging Pill, could only ease the pain and temporarily slow the spread of Yin Qi.
To purge it completely required true Thunder Spirit to pass through the body.
This method was exceptionally dangerous, resembling the lightning tribulation endured by great cultivators undergoing tribulation, and was therefore also called a "minor lightning tribulation."
There were various ways of drawing lightning: borrowing natural lightning from heaven and earth, using rare treasures containing pure Thunder Spirit, or receiving assistance from a great cultivator who practiced a Thunder Method of utmost Yang and strength.
Yet regardless of the method, the recipient had to endure immense pain during the cleansing, with both their meridians and Divine Soul put to the test.
If their foundations were even slightly unstable, at best their Dao Foundation would collapse; at worst, body and soul would both be annihilated.
Usually, only cultivators of the Golden Core Realm possessed bodies and Divine Souls strong enough to endure this method with a reasonable degree of confidence.
Song Yan sighed inwardly. Once Yin-Sha Qi entered the body, it truly was not so easily purged.
Even gathering spirit medicines here in Below the Abyss to refine Thunder-Hanging Pills and suppress the spread of Yin Qi would be difficult.
As for purging it completely, he would probably have to leave this place before making further plans.
The Pill Formula was recorded in exceptional