Though the Xuanhuang Immortal Realm naturally lacks the Taoist principles of [Interception of the Dao of Life], Li Fan has endowed it with this capability through the Alchemy Emperor's Classic by using [Pipa] as a medicinal component.
The transformation on the level of the Great Dao is almost like the birth of innate nature. Initially, there might be some friction, but as time gradually passes, it will naturally become a part of the Xuanhuang Immortal Realm's Heavenly Dao cycle.
"Using Dao as medicine, refining Dao through medicine. The Taiwei Saint Emperor's method shares some similarities with Sun Piaomiao's Alchemy Emperor's Classic. However, while Sun Piaomiao regards it as the foundation of cultivation, in Taiwei Saint Emperor's eyes, the myriad medicinal herbs in the garden are merely tools. The core of the Saint Emperor's Dao path is still the unparalleled Holy Dynasty that spans mountains and seas..."
