Innate Spiritual Qi—the key to breaking through the ninth level of the Secret Realm. Only by possessing it could one perceive the aura of the Spirit Realm and forge the flesh into sainthood.
Nie Yun's main purpose in coming to the Big Dipper Star Palace this time was this special gas.
This thing did not exist anywhere in the entire Floating Sky Continent, Demonfolk World, or even the Myriad Worlds of the Heavens, aside from the Spirit Realm. Back then, the Martial Dao Master ancestors had searched for countless years without finding even a trace of it. That was precisely why no one knew what Innate Spiritual Qi looked like or what properties it possessed.
Nie Yun had once imagined Innate Spiritual Qi to be some special spiritual energy containing the power of chaos, leaving one refreshed and extraordinarily powerful after a single breath. He had also imagined it as some miraculous elixir that could transform a person inside and out with one inhale, turning them into an immortal or a saint... Yet he had never imagined that this was Innate Spiritual Qi!
It was not that this thing was particularly strange, but rather... he had actually possessed it all along!
He had obtained these things back when he and Tantai Lingyue entered that dangerous place, inside Daoist Diesheng's thatched cottage. He had originally thought it was poisonous gas, filling an entire hall to the brim. How could it... actually be the Innate Spiritual Qi he had searched so bitterly for?
This was far too bizarre!
Even Nie Yun felt as though he were going mad.
"Ling Yue left this for me..."
He had sat atop a treasure mountain without knowing it. Nie Yun suddenly recalled Tantai Lingyue's expression and words from back then, and only then did he understand.