The protagonist Lin Wan, as a low-level person, suffers the death of her family due to an unfair "living sacrifice". When he was about to die, his blood was soaked in the "filth" of the sacrifice, thus opening his "yin eye", allowing him to see the resentment, broken vows and sleeping weirdness flowing in the world, and gain the ability to initially guide them. Perhaps the first strange thing he created was the resonance of all the victims in that living sacrifice—"the echo of the sacrifices."
