Chapitre 400: [Bonus chapter]Release from a 5,000 year old curse

The Non luminous dissecating ghost yin flame could be in certain aspects considered an alchemy flame except where typical alchemy flames were used to refine and maximize spiritual herbs and other alchemical ingredients, the non-luminous dissecating ghost yin flame refined humans and treated them as ingredients. It refined everything from blood, and qi down to their soul essence.

It was the go-to flame for corpse refiners and blood refiners, and its origins tied back to an ancient sect known as the ghost lamp sect. 

A sect of heretical cultivators who studied everything from soul refinement to corpse refinement, to human puppetry and the like. The sect existed over a million years ago and its hey dey it was as powerful as the Radiant Sword Sect or the Flowing Valley.