This is a world where "immortal civilization" and "technological remnants" coexist. Three thousand years ago, the ancient scientific and technological civilization "Apocalypse Empire" was cleansed by "Heaven" due to excessive development of dimensional energy. The empire was destroyed, and the descendants of its survivors were deprived of their spiritual roots and became the lowest "mortal species". Today, the Immortal Cultivation Sect rules the nine realms and establishes a strict hierarchy of spiritual roots: Heavenly Spiritual Root (gold), Earthly Spiritual Root (silver), Black Spiritual Root (copper), Yellow Spiritual Root (iron-colored), and the "grey species" (without spiritual roots) that are regarded as waste.
The protagonist's original body is Lin Ye, an outer disciple of the Qingyun Sect. He originally had a rare "Sword Heart Transparent" physique, but at the critical moment of foundation building, his fiancée Su Qingyao colluded with the inner sect elders to take away his spiritual root.
