The black fire was not burning in the air, it was attached to giant bones.
The giant bones were milky white and had a sacred aura.
The giant bones had a main trunk that extended from east to west, it could pierce through heaven and earth, it was like a dragon of the nine heavens that stretched beyond Fang Yuan's vision. On both sides of the bone, there were countless neatly arranged branching giant bones that extended outwards, as if they were giant ivory tusks.
The entire skeleton was like the spine and ribs of a giant, singlehandedly holding up the sky!
"Heavenly spine…" Fang Yuan murmured, the sight before him was imposing, he was underneath the giant bones, being as small as a mosquito.
These bones were like gnarled trees, and the black fire gathered like clouds, covering most of the bones.
After evaluating it, Fang Yuan figured out a few details: "This heavenly spine is actually a rank nine bone path immortal material!"