Beneath the glittering surface of Longzhou City lies a Yin Ruin that has endured for a thousand years.
Every time the old town is demolished, a subway tunnel is excavated, or the foundations of a high-rise are laid, the taboos sleeping underground are stirred awake.
They don’t kill directly. Instead, they cage their victims with rules and wield obsession like a blade.
They alter memories, create endless loops, and magnify the darkness in people’s hearts, driving ordinary people to collapse and disappear without ever realizing what is happening.
Chen Yan, a restorer of antiques, was born able to see lingering echoes, obsessions, and the shadows cast by rules.
His parents died young, his grandfather vanished, and a bronze lock plate dragged him into the city’s darkest secret.
He has no supernatural powers or spells. All he has are his eyes, his hands, and a mind as calm as it is unflinching.
Follow the rules, break the loops, lay restless spirits to rest, and suppress the Yin Ruin.
Su Qinghe, a policewoman on the cold case squad, believes only in evidence, not in supernatural nonsense.
From their initial clashes and suspicion, she becomes the one companion willing to step into the darkness with him.
Together, they pit reason against the absurd and the human heart against the unknown.
The Night Watcher lineage has split in two: the righteous lay spirits to rest, while the wicked nurture ghosts.
Longzhou is no mere city. It is an ancient land of seals.
And Chen Yan is both the key and the final lock.
When the rules collapse and the Yin Ruin spreads, the human world falls into an endless night.
What he must protect is not merely an old alley, but the whole city’s lucidity and its people’s lives.
Chinese-style Cthulhu | Folk customs and rule-based mysteries | High-IQ suspense | No mindless power fantasy | Long-running ensemble cast | Mutual redemption
