"Is it possible that it won't be detected?"
"Don't worry, definitely not," Shi Yanxin said seriously. "Even King-level creatures won't be able to find any clues."
Lu Xun took the bottle and analyzed it.
He found it was indeed as she had said.
This bottle of human blood had some "Red Pigment" mixed in, which was not entirely a technological product, but rather combined with magic side's Spiritual Mark techniques.
Unless the vampires had Lu Xun's "Gluttony" ability, which could completely decompose and annihilate anything ingested, once they drank the human blood, they would be branded with a mysterious mark.
For a spy, being located is no different from death.
What seems like a bottle of blood is actually a deadly poison!
Lu Xun's plan was to infiltrate the vampire spy organization as "Galod" and lure them into drinking the human blood.
Once they leave the hospital, Shi Yanxin can lead the Inner Guard Warriors to hunt down and kill all the vampires one by one.
