The blood sacrifice emphasizes purity. In the Great Yi City Immortal Realm, when a demon cultivator sacrifices a magical artifact, they typically set up an array to extract and purify the blood from the corpses of scattered cultivators.
However, in this zombie flesh workshop, Zheng Yi doesn't need to go through such trouble. His Ink Spirit Evil Fire is incredibly powerful, and its greatest effect is burning the spirit body, making refining impurities a trivial task.
Now, he uses a method of purification by burning with demon flame, skipping those preliminary steps to directly refine the pure blood qi from the zombie flesh.
This method is advantageous for its speed and convenience but results in approximately a 30% loss.
During the burning process with demon flame, a large amount of blood is refined and burned, inevitably losing a significant amount of blood qi, which is wasted and dissipates into the air, unrecoverable.
