"Bone root, upgrade!"
Four thousand points vanished in an instant. Xu Yang felt a surging force well up throughout his limbs and bones, seeping into every inch of his flesh.
His dormant blood energy stirred with a roar, surging like mighty rivers.
Xu Yang's body shone, illuminating the pitch-black quiet chamber as light flowed all over him.
His tendons and bones crackled like beans frying in a pan. His flesh, tendons, and bones writhed together, as though an invisible hand were kneading every part of his body from within.
Xu Yang's vision darkened, his features contorting in pain. Even being deep-fried in a vat of oil could not describe the agony he endured. Every inch of his bones and blood sent pain coursing through him.
He could no longer remain seated. He collapsed limply onto the floor, gulping down air, his eyes glowing blood-red.
That force seemed to grind all his flesh to pieces before putting it back together.
It was as though he had been cast into a furnace, where impurities were stripped away and burned to ash, leaving only the true essence.
The most violent changes occurred in his bones!
Every bone in his body glowed, as though tens of thousands of invisible knives were carving inside them. Stabbing pain came from everywhere, accompanied by incessant cracking.
Under this force, his bones underwent a fundamental transformation, restructuring and strengthening.
Bone dust sifted down, and fragments were squeezed out through gaps in his bones. New bone began growing from the inside out, radiating astonishing spiritual potency.
"Hah..."
Xu Yang panted heavily. Tainted blood and bone dust seeped from his pores, leaving him looking as though he had just been hauled out of a pool of blood.
This transformation was far more violent than when his bone root had reached