Or perhaps the truth was slightly different. Upon seeing Du Lingfei, Bai Xiaochun smiled bitterly, and was fairly certain that he understood.
Many years ago, the Celestial rebelled, waging war against the entire Arch-Emperor Dynasty. The forces of the Arch-Emperor were soundly defeated, losing not just the lands of Heavenspan, but also one of their most important legacies, the Live Forever Codex from the Undying Live Forever Technique!
After relocating to the Wildlands, the Arch-Emperor Dynasty only had the Undying Codex. Perhaps in an attempt to resist the Celestial, or perhaps just to foster hope… the gravekeeper had taken steps to allow people who were not direct descendants of the Arch-Emperor to cultivate the Undying Codex. And as the technique became more widespread, incomplete copies eventually showed up in sects in the lands of Heavenspan.
As a result, the Undying Codex lived on. At the same time, everyone in the Heavenspan Realm had a chance to cultivate...