Blood carried spiritual impurities that were invisible to the naked eye. To remove them, one needed specialized materials.
Treated Spirit Wood Charcoal absorbed residual energies.
Refined spirit soils bound toxins and decay attributes.
Controlled boiling, done at specific temperatures and durations, separated volatile impurities without destroying the blood's structure.
Han Yu applied techniques he already knew from alchemy, adjusting them carefully for this new medium.
He succeeded far more often than he failed.
By the end of the first month, he could consistently extract and purify basic blood without degradation.
That alone placed him above most beginners.
By the second month, his progress accelerated.
He began refining blood.
Condensed blood, where excess fluid was removed and properties intensified.
Stabilized blood, prepared for long term storage.
Basic refined blood suitable for alchemy, talismans, and low tier rituals.
He learned to produce blood ink.
