Longevity Blood (寿血) is a purified Blood Energy; each drop is created from 10,000 bits of Blood Energy through many purification cycles. It is not only the pinnacle of blood energy, but also contains the mysterious grand Dao.[1]
Longevity Blood is extremely valuable to any cultivator as it prolongs one's life and can be also used in critical situations to increase the strength of weapons and techniques.[1]
One drop of Immortal Emperor's Longevity Blood could allow a mortal to live for 10,000 years.[1]
Each cultivator create their first drop of the Longevity Blood at the Third Bloodsurge stage of the Palace Foundation level.[1]