[According to statistics, on the basis of not taking any spirit elixirs, cultivators with dual spirit roots and anomalous spirit roots typically advance one layer every thirty years, whereas those with celestial spirit roots advance one layer every twenty years.]
[The host has top-grade three spirit roots (equivalent to seventy percent of the speed of celestial spirit roots), with an average advancement of one layer every twenty-eight years. The Pure Yang Dao Body provides a three-year reduction; the Pure Yang Broken Sword provides an additional three-year reduction. However, the lifebound treasure absorbs qi and blood, and true qi, thus slowing cultivation, prolonging it by eight years.]
[In practice, it averages out to a thirty-year improvement per layer.]
