There are four levels of spiritual bones in the world. First grade, Heavenly Spiritual Bone. Second grade, golden spirit bone. Third grade, mysterious spirit bone.
Fourth grade, white spirit bone. The rest are all mortal bones and have no chance to practice. Xu Taiping, a man with mortal bones, vowed to prove to the spiritual world that mortal bones can also kill monsters, mortal bones can also eliminate demons, and mortal bones can also ascend to immortality!