The Hehuan Sect cultivates alchemy; my senior sister helps me refine alchemy throughout the world.

[Brainstorming] + [Dark Fantasy] + [Dual Cultivation and Reverse Extraction] + [Alchemy and Refinement]
+ [Multiple Female Leads]
Others use yang energy to replenish yin, but he is invincible with the dregs of medicine.
Shen Yifei, a low-level servant in the Hehuan Sect, has been living a life of hunger for three years, relying entirely on the waste materials from the alchemy furnace to keep him alive.
I unintentionally obtained a "Calligraphy of All Things"
Refining humans grants cultivation techniques; refining demons grants supernatural powers; refining ghosts grants access to the netherworld.
From then on, Shen Yifei embarked on a path of refining all things under heaven.