It's a secret technique of the middle peak of the Blood Stream Sect.
[Use blood qi to form a sword, transform it into a world of annihilation. Whether you’re injured or you injure someone else, the blood qi that spills out will make the blood sword stronger.]
The Blood Annihilation World is split in four levels:
- Refined Blood Qi
- Blood Qi Plasma
- Inverse Blood Ancestral Awakening
- Blood Qi Tribulation