Movement VIII · The Yuan (Tolui · The Undying Army)

I. The Wind out of the Northern Desert

(Counting from his rebirth in the Western Zhou, he has now wandered some two thousand two hundred and thirty years on this journey; a mere ninety years or so separate him from the era before — the Southern Song. After Yue Fei died wronged and the silver flask was wept over in parting, he carried that flask north, past the ruined ramparts of Bianjing and the muddy waves of the Yellow River, the scent leading him all the way toward the sea of grass that is Mongolia. Zhao Hao and Chen Xiu travel with him — two of his own kind who have stood shoulder to shoulder with him since the Han and the Sixteen Kingdoms, spear and twin blades never out of hand, the exceptions on this road he is willing to fight beside and cannot bring himself to erase.)

He came into Mongolia following that thread of scent. The wind of the north is not like the wind of the south; it is coarse as sandpaper drawn across the face, and it sets the felt ropes of the tents creaking day and night. In the wind the scent thickens and thins, and it leads him down into a prisoners' camp — men and women seized from the Western Regions and from the Central Plains, waiting to be apportioned among the thousand-households as slaves. It is there, at the edge of the camp, that he first catches it: a woman crouching on the ground binding the wounds of the injured, her hair blown loose across her forehead, an old scar on her wrist, a scent clear and cold as a winter river, flickering once in the northern wind. He follows the scent over, and as he has done every time, takes his place at her side.

Her name is Aqi. She is a captured Han woman. She had been apprenticed to a weaving house in Hexi; when the city fell she was marched north with the rest, and because she can sew and tend wounds she was kept in the camp to look after the injured. She lifts her eyes and looks at him once, her gaze clean, as though seeing an ordinary knight passing through, and calls him "Brother Chen" — she takes him only for a knight errant who happens to have wandered close. Now and then she senses that there is someone in his eyes he seems to be waiting for, but it never occurs to her that the someone is herself. He does not enlighten her; he only says, "Let me give you a hand," and settles at the edge of the camp, her silent helper.

The days in the camp run longer than he imagined. By day Aqi changes dressings for the wounded and sews their wounds shut, while he splits wood and carries water, and in passing turns back several Mongol soldiers who meant to bully the captives — without a sound, a single raised hand enough to make them see reason and withdraw. Zhao Hao and Chen Xiu patrol outside the camp, spear and blades stowed beneath the felt, like two beasts at rest. One night by the fire Zhao Hao says suddenly, "Brother, this trip is not like the last one, in the Southern Song. Last time we were protecting a girl. This time we have to kill an army." Chen Xiu picks it up: "But the girl is still here." She jerks her chin at Aqi in the tent. "Look at the way she sews. Same as the ones before — like they were all poured from one mold." Chenyu does not answer; he only stirs the fire brighter. They all understand: the "likeness" he meets on this road has never been the same person, only the same thread of scent settling on different people — and this time the scent has settled on a captured weaver, in the northern wind.

This time there are also two men standing outside the camp who strike up conversation with him — Helian Yue and Murong Shuo. Both are old hunters of the north, skilled with bow and horse, but they are not ordinary men who hunt game for a living: what they hunt is "the thing that should be dead and cannot be killed," which the fighters of the roads and rivers call qiongqi hunters. Helian Yue is a heavy, quiet man; his silver-tipped long spear is uncanny in his hands, and he always strokes the shaft once before he speaks. Murong Shuo likes to laugh; at his waist hangs a row of silver tubes filled with holy water. "These things," he says, "work faster than a blade on filth. Silver touches the blood, and the thing can be dissolved." Chenyu joins up with them, and it does not take him long to see that this band of hunters has come for the man at the heart of the camp. Their reason for standing shoulder to shoulder with a few of his own kind is simple enough: they have pursued this army for years, and it is full of qiongqi that cannot be killed — too many, too strong, too fell; mortal hunters thrown into it are wasted, however many they send. A tide that cannot be killed off can only be cut at its source, by old ghouls whose blades can pierce that deep. The hunters need to borrow their blades; they need to borrow the hunters' silver and holy water. Only the two together can make up the one needle.

This band of hunters is no great troop — a dozen or so at most, counting Helian Yue and Murong Shuo — yet each of them has real skill against the undying. They do not use ordinary iron blades; their swords and spears are all sheathed in silver, and their tubes hold clear water blessed with holy chant. Against the sort of thing that "cannot be killed," silver wounds the skin, holy water eats the bone, and fire severs the root. Murong Shuo says they have chased this army for years, from the Western Regions all the way to the northern desert. "Plenty of people in this world want Tolui dead. Not one who got close to him has come out alive — except the likes of us, who don't care about living." Helian Yue adds something colder: "We don't care about living either. But we have silver — and we have you three... our own kind. Silver can wound the hide; it can't cut the root. Old ghouls like you are the only ones who can pierce that ancient blood of his."

That man is Tolui.

Night falls; the wind tightens. Chenyu is splitting wood for Aqi when behind him there comes a thread of scent, very strong, one he knows better than any other — not Aqi's scent, but the scent of his own kind. He turns. Zhuo Sheng stands in the shadow of the tent, felt hat pulled low, frost on his beard.

"You have come to this pass again." Zhuo Sheng opens; his tone is still that ferule suspended above a head. "The wind of Mongolia is colder than any era you have walked through. But this time it is not the sky that is cold."

Chenyu sets down the axe. "Tolui?"

"The youngest son of Genghis Khan." Zhuo Sheng sits down beside him, his voice pressed very low. "The dust of the western campaign had not yet settled when he became one of our kind. Not by me, and not by you — by one older still, who used the sea of blood from a sacked city to make him undying. That one promised him eternal life, and promised him an army that could never be broken."

"Merv." Chenyu recalls the rumors of the western campaign.

"Merv." Zhuo Sheng nods, and there is anger in his eyes, which is rare. "A dozen years ago he took that city and slaughtered close to a million — the number in the histories; I checked it for you, and it is not far off. What the histories do not record is that on that night he did not treat blood as food. He treated it as seed: he drank and passed it on, passed it on and drank again, and turned the corpses of the whole city — and the living too — into his own army. An undying army, and nothing can stand against it."

Chenyu is silent. He draws red bloom to live; Tolui draws red bloom to make slaves. Both undying — one endures, one rages.

"That army cannot be killed?"

"Ordinary blades and arrows cannot cut them down. Fire and silver can wound them, but the wounds cannot keep up — there are too many of them, like a tide." Zhuo Sheng pauses. "But I have looked into the blood he carries — that blood is unnaturally old, and in it there lies the trace of a smell: verdigris, mixed with scorched earth. I have smelled that somewhere before, but for now... I won't say for certain. There is something else as well. When a ghoul who has turned others is destroyed, all those he turned turn to ash. Tolui is the source of this army. If he dies, the tens of thousands he has turned must, in an instant, become dust. That is the most brittle place in this undying army."

"So you want me to—"

"I invited you. And I invited Zhao Hao and Chen Xiu." Zhuo Sheng looks past him to Zhao Hao and Chen Xiu; the two have long since put away spear and blades and stand close by, listening. "The hunters can wound those things, but they cannot get near Tolui — he is always wrapped in his undying army. Only the likes of us can fight our way in and press him down into the ash. Helian Yue's and Murong Shuo's hunters will be the support."

Chenyu looks toward Aqi — she is bent over a wound, sewing, knowing nothing of the conspiracy behind her. She does not remember him, and will not remember. And suddenly he feels how this journey differs from the others: before, he stayed in an era for the sake of someone "like her"; this time she is still here, and what he must do is go and kill an army.

"When do we strike?" he asks.

"We wait for the wind to stop." Zhuo Sheng rises and pulls his felt hat down. "While the wind blows, the ash will not be swept clean."

That night Chenyu turns over and over. Two lines of prophecy roll through his mind again and again, he does not know from where: "The swift rider comes to the brink; the three forms have not yet shown in heaven." He does not know what "swift rider" is, nor what "three forms" are — he only feels in the two lines a taste of life found at the point of death, as though to remind him: the most perilous pass is often the nearest to the turning. He pauses. "The army around Tolui — only our own kind can get close. You and I, plus Zhao Hao and Chen Xiu: four undying bodies, and that is what it takes to pierce the tide. This is what our kind ought to do — not to make, but to gather in." At this Chenyu suddenly thinks of the "kind" he has gathered in along this road: Zhao Hao of the Han, Chen Xiu of the Sixteen Kingdoms — blood that he or Zhao Hao passed on. No one knows better than he that once you have passed it on, you carry the burden for a lifetime. Tolui does not understand that. Tolui only knows how to make. This time, he is going to gather in a maker who has gone mad.

Zhuo Sheng gazes at the fire and, rarely, lets his weariness show. "Do you know why I always say 'gather in'? In that year in ancient Shu there was an old thing who called himself the Torch Dragon, obsessed with making images. He gathered rare talents from every quarter and, following the old genealogies of the gods — which later ages, compiled by masters of the arts generation upon generation into the Classic of Mountains and Seas, until in the Western Han Liu Xiang and his son Liu Xin collated them into a definitive edition of eighteen chapters — he invested them with such names as 'Zhu Rong,' 'Gou Mang,' 'the Queen Mother of the West,' and made ten thousand undying artisans who forged his images and cast his trees day and night. But artisans must feed on red bloom to live, and the blood began to run short, and they scattered and rebelled, and very nearly gnawed through the earliest history. I went to gather him in — but I did not kill him, because he would simply live again. So I did not kill. I used a stratagem instead: his qiongqi, his gods, the myriad artworks his people had forged — I slaughtered them all together and buried the whole of it deep beneath the basin of ancient Shu. Him alone I pinned: an alloy, hard and unyielding, clamped on his joints, and a great mass of metal driven down into the earth with him — one side of his face pressed to the soil, only head and half his body left showing, his red robe long since rotted to rags. He does not sleep, does not drink, never rests. And the metal is so enormous that those who later strayed into the sealed place mistook his size and thought they had come upon a one-eyed god. I buried it very deep, and very cunningly — the place I afterward called, privately, the City of Ten Thousand Artisans: ten thousand artisans, together with their god, buried in the work of their own hands. It is not that there is nothing there. It is that the burial I laid down is too hard to break open. Hard to dig, and the Torch Dragon will not be found — and so he cannot begin again. Since that day I have been the pillar that holds it up: keeping watch, letting no made thing escape again to trouble the world." Chenyu listens, and suddenly remembers the very old things Zhuo Sheng has told him in fragments along the way: ancient Shu, the Torch Dragon, ten thousand artisans, a city buried beneath a basin. So the word "gather in" had been broken into pieces by Zhuo Sheng and scattered across the dynasties to be told to him, long before the first night on which he wished to die. The two matters are the two ends of a single thread.

II. The Sealed Place

Two nights later Zhuo Sheng comes to find Chenyu and says only: "Come with me." Chenyu asks where. He pulls his felt hat lower: "To look at a pillar. This battle is life or death — neither of us may come back. Where that pillar stands, one more person ought to know." Zhao Hao and Chen Xiu stay behind to hold the camp. Zhao Hao watches the two old ghouls vanish one after the other beyond the snow line, and takes it that Zhuo Sheng has gone off again to arrange something others are not allowed to hear.

The undying need no rest on the road, and no need to keep to the official highways. Zhuo Sheng goes ahead, choosing only the trackless mountains, leading him through "shortcuts that should not exist" — old tunnels inside the belly of a mountain, dry valleys whose riverbeds were sealed by the great flood of a thousand years ago, passes that only the wind remembers. As they walk, the snow of the northern desert gives way to the fog of Ba-Shu. Five nights later the two of them stand at the edge of a ring of barren hills: beneath the fog is a basin, in the basin are fields, behind the fields a village, and the sound of chickens and dogs faintly audible. Zhuo Sheng does not enter the village; he circles to the foot of the hill behind it and stops before a patch of ground where even the grass grows short.

"This village slaughters stock every year in the last month." He kicks at the earth at his feet. "The blood of cattle and sheep is dashed onto this ground and soaks in. The villagers think they worship a mountain god, and pray for seasonable weather and good harvests — what they really worship is a seal. That myth I planted here several hundred years ago: blood carries its rank rust down into the soil, and the soil grows a little more solid each year. Whatever men believe in, the soil keeps for me."

At the foot of the cliff there is a fissure, so narrow that only one man can pass sideways. Zhuo Sheng says this is an escape tunnel dug by the Torch Dragon's artisans before they scattered — in the end, a few out of ten thousand remembered the way home. He tracked them all down afterward, and turned these tunnels into doors for his own inspection; every few years he comes down one of them and walks a round: to look at the cracks, at the rust, at whether the old thing is still mad.

The deeper the tunnel, the colder. The first thing he smells is not blood but verdigris mixed with scorched earth. Where the torchlight falls, Chenyu sees them — metal figures half-buried in soil, thousands upon tens of thousands of them: a bronze sacred tree of three tiers and nine branches, birds perched on the boughs, its crown fallen in at one corner; a pillar-shaped mask with bulging eyes and ears like wings, taller than a man; a god with a man's body and a bird's head, standing on two dragons; a great standing figure with a high nose and deep-set eyes, his robe crossed left over right; and a gold scepter, a gold mask, a sun-shaped device of five interlinked rays — pit after pit, layer upon layer, like a genealogy of the gods that has been executed and buried whole in the earth. Every piece was broken and burned before it went into the pit, and the fractures are black to this day. In the pits there is not one written word. Walking among them, Chenyu suddenly understands the weight of what Zhuo Sheng said by the fire — "Hard to dig, and the Torch Dragon will not be found": what lies beneath here is not treasure, it is a prison built to keep something from ever turning over.

At the deepest point the cold light of the metal is still as water. And then he sees the Torch Dragon.

The mass of alloy is too large to be any vessel or implement; it is more like half a mountain melted down and poured whole, pressing on the joints of the old thing and most of his body. Only his head and half his torso emerge: one side of his face lies against the soil, as though he were listening to the veins of the earth. His red robe is so ruined that only a few threads of it remain, hanging from his shoulders like half-burned paper charms. He does not sleep, does not drink, never rests — the hands pinned beneath cannot be seen, but if you hold your breath and listen, there is a sound under the metal, very faint and very even: once, and then again, like forging. Those unseen hands are still at work in the air, forging an image no one can see.

What chills Chenyu's spine most is the eye. A single eye, set square and upright, open. There is no sun down here and no moon, yet on the earthen wall around the place where that eye rests there floats a faint ring of light — his eye opens, and that is his day. The eye sees them come in, and is not startled, nor angered, nor pleading; it only turns, slowly, slowly, and looks the two undying over from head to foot — like an old artisan sizing up two pieces of stock.

"He knows me." Zhuo Sheng's voice is pressed very low. "Every few years I come and count his knuckles for him."

"That is why you brought me."

"This battle is life or death." Zhuo Sheng's gaze has not left that eye. "That pillar — someone besides me has to know where it stands. And there is this: before you go to kill Tolui, you should see with your own eyes what an old ghoul addicted to making things can gnaw the world into. Tolui's army is only the shadow this thing casts a thousand years on. The original behind the shadow is what I have guarded until now."

He is silent a moment, then adds: "There is one more reason, which I cannot speak of yet. When this fight is done — if you and I are still alive — I will tell you."

As they leave, Chenyu turns for one more look. That single eye is still open, its light resting on the earthen wall, quiet, as though keeping an eternal lamp burning for this hell. He asks suddenly: "The soil above — someday someone will turn it over, won't they?" Zhuo Sheng is already waiting for him at the mouth of the fissure. At this he pauses. "They will. Men are the sort of thing that digs, sooner or later, all the way here. And on that day—" he pulls his felt hat down — "I will be there."

By the time they hurry back to the northern desert the wind has still not stopped. Zhao Hao asks where he went, and he only says: "To look at a pillar."

III. The Ash of Merv

Before they strike, Murong Shuo takes Chenyu aside and tells him about that night at Merv. The hunters have pursued this army for years, and Merv is the place where they first smelled something wrong.

"That wasn't war," Murong Shuo says. "War is the living killing the living, and when you're dead it's over. That night at Merv, the dead stood up and the living became the dead — Tolui stood on the city wall like a man watching a play. He drew one, and turned one; when he had drawn them dry, half of the million lives in that city had become his soldiers. The rest became ash."

Helian Yue adds a line, his voice colder than the wind: "When we arrived, the city was empty. Not empty of people — the people were all still standing. But they were no longer people. They are not hungry, not tired, never sleep; they only press forward. Our arrows went through their chests, and they pulled the arrows out and kept walking. Silver wounded them, but there was not enough silver. That night we lost half our band before we understood: this army cannot be killed off."

Murong Shuo says they later spent a night in the ruined city of Merv, and in the middle of it heard a sound in the wind — not ghosts wailing, but the echo of a million people drawing breath together, as though the city still remembered how it died. "We hunt beasts for a living," he says with a bitter laugh. "What mountains of corpses and seas of blood haven't we seen? But that night at Merv, even the wind was salt, and the salt was blood." Helian Yue is silent a long while before he speaks: "That is why we followed them here. Not for the histories. For the million who never left even a name behind."

"The old ghoul who turned him," Zhuo Sheng says, "is older than either of us. The blood of the western campaign ran into a river, and he came on the smell of it, and took Tolui for the most serviceable vessel he could find — a puppet who would win an empire for him and remain forever trapped in the station of a 'son.' Tolui thinks he has gained eternal life and the world, but in truth he is only a blade in another's hand." As he says this, Zhuo Sheng taps a fingertip against his knee, once, and again, as though counting an old account gathered over thousands of years and still one entry short. Chenyu listens, and thinks of his own rule for drawing red bloom: he kills enemies in order to protect people; Tolui kills men in order to make slaves. Both undying — one spends his strength on enduring, the other on devouring. And suddenly he feels a kind of pity for that army: they too were living people once, forced into undying, never even knowing how they died, before they became Tolui's blades. To kill them would be, rather, to untie them.

Chenyu listens, and thinks of every battlefield he has walked. That he feeds on red bloom is a rule kept in the dark: he kills an enemy, bends and drinks, and no one notices; it is only to live, only to go on guarding. Tolui has turned "eating" into "making" — he has made an army that will always obey and never die, to win for him an empire that belongs to no one. Both undying bodies — one spends his strength on enduring, the other on devouring.

"Zhuo Sheng is right." Zhao Hao, gripping his spear shaft beside them, speaks for once. "This kind of thing cannot be left. If he really won the world, the histories would read differently."

"The histories will not read differently." Zhuo Sheng is standing outside the tent again, who knows when he got there, as though he had never left. "Tolui's death will be recorded by the scribes as a sudden illness — he does in fact die abruptly of a sickness in these very years. If you strike, you only give that 'illness' a different cause. The mortal Mongol armies will still go the way they were meant to go: Ögedei takes the throne, then Güyük, then Möngke, then Kublai; the Jin falls, the Song falls, the Yuan is founded — none of that is ours to touch. What we kill is only the small undying army he has secretly made out of blood. Once that small army scatters, the world is still the world in the histories."

Chenyu stares into the fire and suddenly feels the weight of this assassination. The million lives of Merv will not come back because of a blade tonight. But if Tolui's army is allowed to grow, the undying soldiers he makes of blood will only multiply, until one day the mortal Mongol armies themselves are swallowed by this "true army" — and then what the histories record will no longer be Ögedei and Kublai, but a Tolui who never dies and is never satisfied. What they must put out is not merely an army, but a million grievances that never got to be spoken, and a name that would have rewritten the color of blood.

This is the measure of the injunction against altering the great currents of history. Chenyu has heard it countless times, yet this time it is especially clear: what they are going to kill is the monster hiding in the seams of history, not history itself. Kill Tolui, and the million wronged souls of Merv may not be laid to rest — but at least that army which would have rewritten the color of blood will, in a single breath, return to the ash where it belongs.

"The wind is about to stop." Chen Xiu looks up; her twin blades knock lightly against her knees and give off one very thin note.

And so it does: in the latter half of the night the wind weakens, the snow grains fall more slowly, as though the sky too were waiting for this.

IV. Infiltration

Tolui's encampment sits on the ruined foundations of an old city by a river. Its outer ring is the tents of the mortal Mongol army, layer upon layer; inside stands an old stone keep, where he and his undying army hold out. The hunters go first, silver tubes and fire-strikers hidden under their felt cloaks, mixing into the outer prisoners' camp to start a disturbance and draw off the mortal garrison.

Chenyu, Zhao Hao and Chen Xiu circle to the far bank, where the river covers their backs, and creep in over half-frozen mud.

"Remember," Zhuo Sheng charges them at the last, before they set out. "Once you are close to Tolui, do not linger over the fighting. His army is the tide; you are the needle. The needle must pass through the tide and strike the eye of the tide. Break the eye of the tide, and the tide scatters."

Aqi is in this camp as well. The night before they leave, she mends for Chenyu the felt coat the wind has torn, teasing the lamp with her fingertips, when she suddenly stills and looks up at him: "Brother Chen... you are like someone who is waiting for someone."

Something moves in his chest — this is a thing he has heard from many of her. But Aqi's tone turns, and she laughs first: "Perhaps it is only that the north is so hard; everyone here looks like they are waiting for something. Don't take it to heart." She knows only that she has never seen him in all the years before, and is therefore certain that the one he waits for is not herself. He nods, says nothing to enlighten her, only draws the mended coat about him and tells her, "When the wind rises, get into the cellar."

In each life they only happen to carry a similar scent; what he meets is never a reunion, only one gentle misrecognition after another. What he guards is precisely the peace inside that "misrecognition."

Yet the infiltration is not entirely without peril. The three creep along the reeds by the riverbank, and no sooner are they past the first deer-horn barricade than they run into a patrol of Mongol soldiers — torches swaying closer, no more than ten paces away. Zhao Hao's spear is about to strike when Chenyu holds him back; on lightened toes the three of them sink together into a shallow pool at the water's edge, leaving only their breath above the surface. The torchlight sweeps the tips of the reeds, and sweeps back; the patrol curses — "this devilish weather" — and, never noticing that three men are soaking at their feet, moves on. Chen Xiu keeps her eyes open under the water, twin blades held across her chest, like a fish that does not startle. When the footsteps are far away, the three climb out of the water; their felt cloaks are soaked through, but they have made not the smallest sound — this is the advantage of having lived two thousand years: even holding one's breath has become instinct.

The infiltration goes more smoothly than expected. The disturbance in the outer ring begins; fire flares on the western side; the mortal garrison shouts and surges toward it. The three hug the shadow of the keep wall and climb into the inner court.

The court is unnaturally still. There is no scent of the living, only something cold — iron rust mixed with the rank smell of earth: the undying army. Chenyu follows the smell and sees them: row upon row of standing "men," faces ashen, eyes sunk deep, the skin showing beneath their armor a stone-like blue. They do not move, do not speak, like stelae planted in the earth.

"So this is that army." Zhao Hao speaks low; the tip of his spear is already out.

Before the words are out, the "stele" in the front rank turns its head, and hollow eyes look toward them. In the next instant the whole court comes alive — the undying army presses in like a tide.

V. The Undying Army

This is a battle Chenyu will remember for a thousand years.

The blades of the undying army cause no pain when they land, because these creatures have no sense of pain at all; but their strength is terrifying — a scimitar swing can shave half a foot off a stone step. Zhao Hao's spear churns a road of blood through the tide, its tip wrapped in silver and slick with the blue blood of the undying; each one he runs through stiffens and falls, and two more step into the gap at once. Chen Xiu's twin blades wheel around her body, the blade-light weaving a net of silver that beats back everything that lunges close. She does not linger over the fight; she only covers Chenyu's flank, as she has done every time for several hundred years.

The tide of the undying army is worse than they imagined. When the first wave presses in, Chenyu has not yet drawn his blade and already a scimitar takes him in the shoulder, splitting skin and flesh — but it does not hurt, because the other feels no pain either; two undying bodies colliding is a contest of who is faster, and who is more ruthless. Helian Yue drives his spear through the throat of the one in front of him, and three more come at him from behind. Murong Shuo's silver tubes spray and spray again; where the holy water lands, blue smoke rises, and still it is not enough to hold back their numbers. A young hunter is too slow to dodge; two of the undying bear him down and bite into his throat — he is not one of their kind, so that bite will truly kill him. Chenyu turns and cuts the heads off both, and hauls the young hunter up, but the man's neck is already mottled blue-grey and his eyes have gone vacant. "Go..." The young hunter breathes the last word, and his hand falls. Chenyu closes his eyes a moment — this is the most venomous thing about Tolui's army: it does not merely kill you, it turns you into itself.

Chenyu himself is the needle. He is far faster than these later-turned of his own kind — he is a born one, and the swiftness in his blood is something not one of this army possesses. He passes through the tide, and where his blade goes the undying fall in rows — but those who fall rise again.

"Can't kill them all!" Murong Shuo fights in from the western side; the holy water from his silver tubes douses the faces of the undying and hisses up blue smoke, and at last those "stelae" do not rise again. Helian Yue's silver spear turns over and over at the head of the tide; every thrust drives exactly into a throat, and once pinned, they are truly dead. The hunters have finally shown their use: they close the gap left by "can't kill them all," and cut the tide off, section by section.

But the true pass lies inside the keep.

Tolui is in the stone hall at the heart of the keep, seated high on a chair draped in hides, like a corpse wearing a king's robes. He is more "alive" than Chenyu imagined — his face is not blue, there is light in his eyes, he even wears a smile, as though the slaughter before him were only a show put on for his amusement.

"Another of the kind." Tolui looks Chenyu over; his voice is as mild as a man remarking on the weather. "You come at a good moment. My army is short of one as old as you. Stay. I will let you stand forever at the head of the tide."

"I did not come to join you." Chenyu comes to a stop, the point of his blade hanging to the ground.

"Then you came to die?" Tolui laughs and raises a hand; the undying army on both sides of the stone hall turns as one and closes Chenyu in. "Do you see? All this is mine. A million picked from a million — they cannot be killed off, they cannot be burned out. What is one man like you worth?"

"Worth that needle."

Chenyu moves. The swiftness of a born qiongqi draws itself into a grey streak across the stone hall, and before Tolui's smile can be taken back, a blade has taken him in the chest. But Tolui is after all an old ghoul carrying ancient blood; that stroke opens only skin and flesh. He grabs back-handed, five fingers like iron, and very nearly crushes Chenyu's shoulder. Zhao Hao's spear arrives at that instant, its silver tip driving into Tolui's elbow and forcing him to let go; Chen Xiu's twin blades come in from the other side and strip away the armor guarding him. Tolui roars, the sound shaking grit down from the stone — for he is strong, strong enough to knock Zhao Hao back three paces and knock Chen Xiu's blade half an inch off line.

Tolui's arrogance breaks in the instant their blade tips meet. He had thought this "later-turned" before him nothing to fear, but Chenyu's swiftness belongs only to the born — too fast even for an old ghoul carrying ancient blood to follow the streak. The two exchange a dozen passes in the stone hall; three times Tolui's claws rake Chenyu's armor, and three times Zhao Hao's spear and Chen Xiu's blades drive him back. At last he panics, and the undying around him press in like a wall to shield their master — but Murong Shuo's holy water and Helian Yue's silver spear pin them fast, and the wall is broken through before it can close. "You—" Tolui's smile collapses entirely. "You are nothing but a few old ghouls and a few mortals!" Chenyu does not answer; he only shifts into his right hand the spear of pure silver Helian Yue has passed him. He knows: if this thrust does not go through the heart, none of them will walk out of this keep tonight.

"Silver cannot wound the source!" Tolui laughs wildly, and the undying press around him like a wall. "I have a whole army. You can kill until dawn and never finish!"

"We don't have to finish." Chenyu wipes the blood from his shoulder and glances at Zhuo Sheng — Zhuo Sheng is standing in the shadow of the hall door, no one knows when he got there, as though he had long since foreseen this scene. "We only have to kill you."

At that moment Murong Shuo's silver tube sprays its last arc of holy water, straight into Tolui's face; blue smoke hisses up, and Tolui's movement stalls. That stall is all it takes. Chenyu's blade, carrying the pure-silver spear Helian Yue has handed him, drives in through Tolui's heart — silver through the heart, and the source of the ancient blood is cut.

Tolui's smile freezes on his face. He looks down at the length of silver through his chest; his lips move, and a few broken words escape him: "The mold... he said, I am the master mold... the army is—" The sentence is never finished. His body stiffens once, and then—

The whole stone hall, together with the undying army outside, collapses into ash in the same instant.

No sound. No screams. Tens of thousands — hundreds of thousands — of "stelae" that Tolui had made of blood, like puppets strung on a single thread: the moment the thread's end is cut, they all come loose at once — flesh and skin to dust, armor dropping to the ground, blue blood boiling away into a soundless mist. The undying army that a moment before pressed in like a tide is, in an instant, only a ground of slowly drifting ash and a courtyard full of dead still wind.

It is a long while before Murong Shuo dares to breathe. He crouches and takes up a handful of ash; it runs out between his fingers, cold as snow. "Hundreds of thousands... gone just like that?" Helian Yue lowers his spear too, and looks over the empty court, weariness showing on him for once. "We chased them for years. We thought we would fight them all our lives. And it turns out all it needed was killing the right one man." Chenyu says nothing; he only wipes the ash from the silver spear. He has seen too much death — but this kind of death, a whole army turning to dust in the same breath, without a sound, shakes his heart more than any slaughter. That is not killing; it is "withdrawal": as if someone had taken a game of chess played half the day and gathered up pieces and board together.

"When a ghoul who has turned others is destroyed, all those he turned turn to ash." Zhuo Sheng comes in and looks at the ash on the ground, and sighs, which is rare for him. "So the army he made was this brittle."

Chenyu draws out his weapon, and ash patters from his armor. Suddenly he understands why this one is the finest: not because of how many were killed, but because killing the right one man returned an army that would have swallowed the world to the dust where it belonged, in a single breath. That lightness of "breaking ten thousand with one" weighs more than any slaughter.

Aqi's head appears at the mouth of the cellar, her face covered in ash, but alive — she is human, not made of Tolui's blood, so the "turning to ash" has nothing to do with her. She sees Chenyu, and there is in her eyes the panic of one who has come through a catastrophe, and something else, a familiarity she cannot name. "Brother Chen... did you kill it? That monster?"

He nods, says no more, only helps her out of the cellar mouth. She does not remember him from a former life, and will not; she will only remember that a silent knight errant once stood before this prisoners' camp and turned aside a calamity she could not put a name to.

VI. The Artisan Who Slipped the Net

Dawn is near. The hunters gather the belongings of their dead companions; Zhao Hao and Chen Xiu go ahead, escorting the column of captives who are to be released. Zhuo Sheng does not go. He crouches before the heap of ash at the center of the stone hall, unties a corner of felt cloth, and very carefully wraps up a double handful — Tolui's ash.

"Smell it." He holds out the corner of cloth.

Chenyu leans close. Beneath the iron rust and the dust there does lie a thread of a smell, very faint — verdigris, mixed with scorched earth. He starts. He smelled this only nights ago: in the earth beneath Ba-Shu, on the broken, burned fractures of thousands upon thousands of metal figures.

"The smell of the bottom of the pits in ancient Shu." Zhuo Sheng looks at the cloth in his hand. "The first time I tested the blood Tolui carried, back in the camp, I caught it. Everyone who carries that line of blood has this smell in it — like the fire-mark of a furnace, poured into the blood, and not washed out in thousands of years. That is why I took you to see the pillar: my first thought was that the old thing had got out on his own. But the seal has not moved a hair; the Torch Dragon is still pinned under the alloy. So there is only one possibility left for who turned Tolui—"

He stops for a long time — so long that far off the river ice cracks with a single report.

"When I buried the ten thousand artisans that year, I thought I had gathered them all in." He says it word by word. "I missed one. I missed one."

A fire is stirred up again. Across the flames Zhuo Sheng opens that account from more than two thousand years ago, entry by entry.

He was a foundryman of the Shang. His craft was matchless, yet the ritual vessels he poured held the blood of human sacrifice; his heart had long gone cold on the four words "make things to honor the gods." The Torch Dragon sent men to recruit him with a single sentence — come with me, and I will teach you to make gods that no longer need men killed to honor them — and so brought him into ancient Shu. For all his matchless craft, his birth was low; he led no clan of his own, and never won a god's name — names like Zhu Rong and Gou Mang belonged to the great masters. He only made the molds.

The year the red bloom ran short and the ten thousand artisans spoke of scattering, it was he who led the digging of the escape tunnels. The man who makes molds knows the nature of earth best. On the night the tunnel broke through, Zhuo Sheng arrived: the gods and the great masters were buried one by one, and he took the last party of them down into the soil; crawling to the mouth, he looked back, and one after another the people behind him were dragged back into the dark. The only one who came out alive was himself.

"I hunted him for several hundred years." Zhuo Sheng adds a stick to the fire. "But the turned carry no born scent; they cannot be smelled out. I could only look for corpses. And he is an artisan — even his feeding is like taking stock: not one cut too many, no seams, no leavings. For centuries I never found a single carcass, and I took it that he had died long ago in some nameless corner." He shakes his head. "He did not die. He hid himself in the workshops of the ages — casting bells under the Zhou, standard measures under the Qin, wash-basins under the Han. In the imperial foundry of every dynasty there was an artisan whose craft was too good by half; the names changed, crop after crop, but the line of that matchless skill never broke. That was the last living mouth left by the ten thousand artisans, and he would not let it die. At night he wrote out from memory his old companions who had been given the names of gods — the Classic of Mountains and Seas, compiled by the masters of arts in later ages, is for him half a family register and half a grave-stone."

"What is his name?" Chenyu asks.

"Feng." Zhuo Sheng spits the word out like a rusted nail. "The name on the official registers — who knows how many times he has changed it. But the character he poured into his vessels has not changed in two thousand years. Long ago, collecting broken vessels, I handled one from the Warring States — and that character was incised on the rim. When the vessel is finished, the name is incised, to test the maker's honesty. I did not dig this name out. He left it himself, all along, on the bronze he poured."

On that night at Merv, Feng followed the smell of the river of blood to see. A slaughter like that reminded him of the night of the burial. On the mountain of corpses he picked out Tolui — the youngest son, forever trapped in the station of "son," a warrior without equal in his age, and in the end fated to sicken and die in the shadow of his elder brothers. A few words, and he turned him. What he taught this new ghoul afterward was not swordsmanship but mold-casting: Tolui as the master mold, blood as the molten bronze, to cast an army exactly alike, without pain, without weariness. Hearing this, Chenyu feels a chill along his spine — those soldiers in the court, stele-like, their faces alike, without pain or feeling, were truly poured from a single mold. That was not an army. It was the largest piece of mold-casting of his life.

"Winning an empire is a play acted for mortals." Zhuo Sheng's voice drops. "I calculated where that army was headed — sooner or later it would go south, to ancient Shu. I buried it too deep, too cunningly; mortals could dig a thousand years without breaking through. But an undying army can dig for thirty years without resting. He does not want an empire. He wants to dig his master out of the earth."

Chenyu is a long time silent. He remembers the half sentence Tolui could not finish as he died — the mold... he said, I am the master mold... So in Feng's eyes that prince who thought himself unrivaled had been, from beginning to end, nothing but a bronze vessel not yet fully poured.

"I have been gathering in for two thousand years," Zhuo Sheng wraps the handful of ash carefully and puts it inside his coat, "and I missed one."

Chenyu looks at him, and suddenly understands what it is this ancient fellow has been keeping. "Will he come again?"

"I don't know." Zhuo Sheng looks southwest, where a thousand li of snow plain and wall of fog away lies the basin of ancient Shu. "But as long as that old thing is still in the earth, he is certainly still on the road. And I—" he pulls his felt hat down — "am here too."

VII. Departure

As dawn approaches the wind stops entirely. The ash settles clean; the old keep is only an empty shell, as though no one had ever held it.

Zhuo Sheng stands on the riverbank, watching the east go white. "Tolui's death will be recorded by the scribes as a sudden illness. Ögedei will take the throne, and the Mongols will go on fighting for their empire — the Jin will fall, the Song will fall, Kublai will found the Yuan. None of that changes because of what our hands did tonight. What we touched was only the army that should never have existed."

"That army is gone." Zhao Hao hoists his spear back onto his shoulder and, for once, lets out a breath of relief.

"Gone." Zhuo Sheng looks at the three of them, his gaze lingering a moment on Chenyu's face. "You have killed a good deal on this road, but this time what you killed was the possibility of altering history itself. Remember: having lived three thousand years, the greatest ability is not being able to kill, but being able to bear — to keep your hands off what should not be touched. Tonight, you bore it."

Chenyu does not answer. He turns and looks in the direction of the prisoners' camp. The hunters have already enrolled Aqi in the column of captives to be released; in a few days she will follow it back to Hexi, or on to some other city, and take up the weaving craft again. She will not remember him — she will only remember that there was once a wind in the north she could not explain, and in the wind a silent knight errant who turned aside a calamity for her, and then went away.

In every life it is only a meeting, never a reunion — only one gentle misrecognition after another. And in the midst of this misrecognition he has, in passing, put out an army that would have reddened the world.

As the three walk south along the riverbank, Zhao Hao suddenly sighs. "Brother — that young hunter today... he died ahead of me." Chen Xiu says nothing, only slides her twin blades into the felt. Chenyu knows what they are thinking: on this road they have seen too many mortals die under the claws of the undying, and too many of her, coming and going. Zhao Hao and Chen Xiu are his own kind, standing beside him since the Han and the Sixteen Kingdoms — the only two exceptions he has kept on this road; yet even this standing shoulder to shoulder must one day scatter into smoke somewhere else — he has a faint premonition that the smoke is nearer than he thinks. He does not say it aloud; he only steadies his step. The scent ahead is very faint, leading him toward the next era he has not yet met. And Aqi will follow the released captives back to Hexi, take up the weaving craft again, and treat this wind of the north as a dream she cannot explain — in the dream a silent knight errant turns aside a calamity for her and then goes away; she does not remember him, and never needs to.

"Let's go," he says to Zhao Hao and Chen Xiu, and nods once to Zhuo Sheng.

The three go south along the riverbank. The scent is faint ahead, leading him toward the next era — a world called the Ming, no more than a few decades from here, where there is a general named Chang Yuchun, and his younger sister, who always insists on mending other people's armor.

The red thread pulls him on toward the next stage the scent points to. On this stretch he still has Zhao Hao and Chen Xiu at his side; but he knows that this standing shoulder to shoulder will one day scatter into smoke somewhere else. That is a story for later.

*(End of this movement. Continues in Movement IX · The Ming)*