The so-called "Blood Refinement" is where cultivators use their own flesh and heart blood to refine magic artifacts, in order to enhance affinity.
But the celestial bodies within the Spirit Realm are essentially "magic artifacts" too, only far larger in size.
At present, Lu Li is set to create a "Neutron Star," with the main materials being two enemies who died tragically, their remnants and families still furiously cursing and swearing.
The Immortal Palace, concerned about the affinity during artifact refining with such things, invited a few ladies to contribute an arm.
After all, a group of female Heavenly Monarchs and Female Martial Saints, each with a stronger self-healing ability than the last, could regrow a severed arm very quickly.
They were also very eager, with Xiao Cha acting fastest, her finger turned knife and poised to chop at her own arm.
But the Immortal Palace, ever protective of Lu Li, gave a suggestion that was somewhat extreme.