Ashes of the Immortal Path

Lin Ye, betrayed by his brother who dug out his bones and cast him into the Abyss of Buried Gods, merges with the remnant soul of a demon lord at the brink of death. From then on, he forges demonic bones from resentment and returns bathed in blood, vowing to slaughter all hypocrites and pierce through the nine heavens! — Description from novelcodex.org