The Fourth Spirit Medicine of the Immortal Realm

Besides, this time Lin Xuankong drank Seven-Leaf Spirit Tea,

it was not merely his lifespan limit that had received an utterly terrifying increase!

Lin Xuankong glanced at Guang Yu'er before him. Seeing that she would likely not awaken from her cultivation anytime soon, he quietly poured immortal yuan into the Ninth-Rank True Spirit Bone within his dantian.

The next instant,

his figure vanished from the pavilion and appeared within the secret realm space of the Ninth-Rank True Spirit Bone.

The current Ninth-Rank True Spirit Bone secret realm

had already become incomparably vast. Compared to the Immortal Realm, which housed countless billions of human cultivators, it was not much smaller. Even with Lin Xuankong's Nine Gates Heavenly Eye at an extremely high level, and even with his Spirit Soul having reached the supreme realm of the Immortal Realm, after he activated the Nine Gates Heavenly Eye with his supreme Spirit Soul, he still could not see even one ten-thousandth of the Ninth-Rank True Spirit Bone secret realm's territory!

Had he not been the secret realm master of this Ninth-Rank True Spirit Bone secret realm itself, capable of traversing to any location within it in a single thought, such an enormous secret realm would have taken Lin Xuankong more than a dozen hours merely to travel from south to north!

And that was only with the aid of a high-grade immortal artifact. Otherwise, relying solely on flight arts, even an Earth Immortal like him, who had already stepped into an extremely high realm, would still need several months to cross this secret realm!

At this moment,

standing atop a lofty mountain within the secret realm,

Lin Xuankong's mind stirred, and he poured immortal yuan into every part of his immortal body.

Under normal circumstances, the immortal body of a Ninth Grade Perfection