Divine Blood was a type of liquid that would be produced by the soul of a Holy Spirit level Spirit Tribe cultivator following death by natural causes.
If the blood were to be dripped onto any sentient object, the latter would develop intelligence and evolve to become a low-grade spirit. Divine blood was still an extremely important tool for the Spirit Tribe in their quest to maintain their population.
Cultivators could use this divine blood as an ingredient to create a spirit medicine known as the Blood Yang Pill. Consumption of this pill could enhance one's cultivation base just as 100 years of cultivation for a Nascent Soul cultivator. And body refinement warriors could use it to break through a cultivation bottleneck or attain a secret technique known as Blood Crystal Armor by smearing the blood all over one's body. It could protect from any attacks below the Void Refinement stage temporarly.