Entry 01: Will o' the Wisp (Ma Trơi)

Excerpt From The Netherworld Book Chapter Of The Abyss Of Yin Souls

Will o’ the Wisp, or Fire Demon, belongs neither to the netherworld, nor completely to the yang realm. It is spiritual energy taking form, born from chaos and lack of recognition, vengeful souls of those who died in battle, ownerless bone remains, where cold yin earth energy accumulates. Its form is a flickering flame, weak but never extinguished. It glows pale blue, white, occasionally floating up with cruel illusion. It exists to seek warmth, or a replacement soul to escape wandering existence. In old battlefield lands of the northern region, there was a night watchman named Ba Deo, who was one who scorned the supernatural. One misty night, he saw it. About a hundred steps from him, a blue flame flickering suddenly stopped drifting, then abruptly flew straight toward him with horrifying speed, carrying the bone chilling cold breath of shadow souls. That cold seeped into the back of his neck, and the wind whistling by his ear was no longer wind, but countless whispers from souls carried by Fire Demons. Ba Deo collapsed before the village gate. He lived three more days, eating nothing, drinking nothing, only a cold mortal shell with eyes wide and soulless. People knew, he had been soul snatched by Will o’ the Wisp. The soul stolen away, Ba Deo only repeated one meaningless phrase until death: Blue light, it is very cold, it wants to take warmth. That night, the blue flame still flickered on the field, as if it had swallowed a new source of warmth whole, growing even stronger in loneliness and tragedy.

Secrets Buried Beneath Cold Earth Layers

These demonic flames do not randomly dance in the night, they are remnants of forgotten pain, from old battlefields where corpses piled without a single grave, or cemetery swamps where white bones lay exposed under rain. Resentment from the last breath, buried in cold earth, condenses into phosphine and diphosphine gas, smoldering to create flickering blue flames, half real half illusory. According to folk belief, Will o’ the Wisp is the soul of those who died unjustly, tree stump souls, or even mischievous small demons, wandering seeking ways to tease the living in exchange for a bit of yang warmth. In northern lands like Quang Ninh or Lang Son, where war relics still carry the acrid smell of bombs and bullets, whispers say each flame carries the cries for help of thousands of souls, stuck between the boundary of life and death, waiting for an innocent traveler to lure into the whirlpool of resentment. Not just from war, sometimes they are born from natural disasters, where floods swept away villages, leaving human bodies floating on deep rivers, and that silent decay awakened Fire Demons from the earth’s depths, turning darkness into the stage of eternal horror. At ancient temples by the Red River, where wind carries the moisture of the past, people still carve warnings on wood, reminding that if not transcended in time, resentment will transform into Will o’ the Wisp, multiplying in mist, waiting for new victims to light up their own pain.

Flickering Phantom In Mysterious Night Mist

When night falls like heavy black cloth, Will o’ the Wisp does not rush forward but silently drifts at the edge of vision, a weak blue light dancing on desolate fields or by dark forest edges. It can look like a lost torch of distant travelers, or campfire light inviting from afar, luring the lonely with fake warmth in cutting cold. But when strangers approach, that flame will suddenly accelerate, flying in circles around their heads with faint hissing, carrying the strong stench of grave earth and freezing cold seeping into bone marrow. The sound from it is not fire crackling but distant whispers, like distorted pleas echoing from the netherworld, telling of bloody battles that have never subsided, making listeners’ hearts beat erratically, souls shrinking before invisible terror. The accompanying smell is that tar mixed with the sour taste of old resentment, spreading in misty air, making vision blurry and surrounding air heavy as cast lead, sometimes luring entire groups of Will o’ the Wisps gathering, forming demonic blue light barriers blocking paths, turning familiar roads into mazes leading straight into the abyss. On new moon nights, when mist rolls from deep rivers, Fire Demons often appear densely, their flame tongues interweaving like flickering spider webs, waiting for the sound of lost footsteps to set traps, pulling not just warmth but also painful memories of countless human lives.

Eternally Spreading Freezing Curse

Encountering Will o’ the Wisp is not just a passing illusion but a freezing curse extending into the next life. Victims initially feel bone chilling cold spreading from flesh, as if invisible hands stroke the back of the neck, making breath choke into meaningless stammers. If the flame touches flesh, pain will spread like ice expanding, limbs gradually numbing, blood congealing in vessels, and ultimately, the spirit is sucked from the body, lost drifting in the deep abyss of shadow souls. Those lucky enough to survive still carry permanent marks: pale skin, trembling voices, along with horrifying dreams where Will o’ the Wisps chase with chuckling laughter echoing from darkness. Moreover, that curse can spread, making victims’ relatives begin to see blue lights wandering around houses late at night, or hear strange hissing in wind, gradually pulling entire bloodlines into endless cycles of resentment. In villages by Lang Son border, where mist carries whispers of the past, there are families still telling of ancestors once led astray by Will o’ the Wisps, and from then, their descendants must live with persistent fear, avoiding fields on dark nights, because just a passing glance can awaken Fire Demons from the deep sleep of memory.

Saving Light In Endless Darkness

Through generations passed down, folk share ancient rituals to repel that horror. If suspecting blue light is Will o’ the Wisp, do not look directly at it, because that gaze will bind your soul into the whirlpool of hatred. Instead, turn your back immediately, mouth murmuring names of protective deities like Saint Giong or Ba Chua Kho, while sprinkling a handful of salt grains or fresh banyan leaves toward the flame, because their sour bitterness will make Fire Demons shrink, forcing them to retreat deep into darkness. And above all, stay away from old battlefields or desolate cemeteries late at night, where night wind still whispers curses of those who have passed. Experienced shamans in the northern region also advise using charms drawn with charcoal from graves, carved on yellow paper with sutras for salvation, burned so smoke carries away resentment, releasing Will o’ the Wisp souls from cycles of suffering. Or, if daring to face it, throw a handful of hot roasted rice toward that light, because crackling rice grains will dispel the illusion layer, forcing Will o’ the Wisps to reveal true form and flee before dawn. Yet, no matter which ritual, all require iron courage, because just a moment of hesitation, and that blue flame will rush forward, pulling you into the shadow realm where hoarse whispers echo endlessly. Today, Will o’ the Wisps seem to only remain faint shadows in stories adults use to scare children, like go out late at night, watch out for Will o’ the Wisps leading you astray. Yet in lands around the northern region, there are still old people telling that sometimes, in silent late nights, blue lights flicker on fields, and when northeast wind blows past, it suddenly rushes toward the witness. That is Will o’ the Wisp, still wandering, still craving, in the endless night of the netherworld.