Perfect Yin, cold and austere; perfect Yang, blazing and radiant. The austerity comes forth from Heaven, the radiance issues from Earth. When the two commingle and form harmony, the myriad things are born.
—Zhuangzi, "Tian Zifang"
The storm came without warning.
When Ji Yan looked up at the sky, the last thread of clear light was being swallowed by leaden cloud. The mountains of the western marches had turned to ink-dark beasts in the dusk, spines rising and falling, crouching in silence. Wind surged up from the valley floor, thick with the raw smell of snapped branches, and set his sleeves snapping. Lu Yuan halted half a step behind him and raised a hand to wipe the rain from his brow ridge. The raindrops had already joined into lines, pouring down through the gaps in the dense canopy like countless fine transparent needles, pricking into the earth and sending up small spatters of mud.
"There's a cave ahead," Lu Yuan said.
His voice was not loud, but it cut clearly through the curtain of rain. Ji Yan looked back at him and saw that the rain had washed his features to a rare softness, like a piece of green jade lying under water. Lu Yuan lifted a hand and pointed to the left, where a fold in the rock face lay beneath vines and moss, its black mouth like a half-closed eye.
Ji Yan swiped the water from his face and grinned. "Heaven hasn't forsaken me yet."
He was the first to push aside the vines and duck inside. Lu Yuan followed, and as he stooped he heard his clothing scrape against the rough stone with a faint rustle. Inside it was darker than outside, yet the air went suddenly still. The rain was shut out by the rock, leaving only the clear echo of water dripping from the tips of stalactites, one drop, then another, like some ancient way of keeping time.
Ji Yan fished a fire-starter from his coat and blew on it twice, and an orange glow bloomed in the dark. The cave walls were slick and wet, giving back the faint light, their surfaces etched with winding channels worn by flowing water, like rivers turned to stone. By its light Lu Yuan looked around and found the cave deeper than he had imagined. Where the firelight reached, the passage ran on inward with no end in sight, and from somewhere very deep within seeped a dim, pale glimmer.
"Further in," Ji Yan said.
Lu Yuan hesitated for an instant. He was cautious by nature, and now a nameless unease rose in him, like a very fine thread drawn tight across his chest. But Ji Yan had already stepped forward, the firelight swaying away and stretching his shadow long, then short. Lu Yuan had no choice but to follow.
At first the passage was very narrow, admitting only one person turned sideways. The walls closed in on either side, almost brushing their shoulders, and the pressure of the stone bore down on him. Ji Yan walked quickly; Lu Yuan could hear the swift, sure rasp of his robes against the rock. Then, abruptly, the narrow passage ended.
The world opened out before them.
Lu Yuan forgot to breathe.
It was a space that words could not describe. There was no vault overhead, or rather the vault was so high it might have been sky, and a soft white radiance fell from above, neither dazzling nor dim, like moonlight through thin cloud, or the first sun waking in morning mist. There was no sun or moon, yet everything stood clear and luminous; no wind, yet the air was cool and sweet as spring water. Underfoot lay downy grass, dotted with small white flowers of no name he knew, their petals thin as cicada wings, trembling slightly in the gentle light.
Ji Yan stood before him, the fire-starter already dead in his hand. He did not need it now. He had his head tipped back and his mouth slightly open, his face rendered pale by the light that came from everywhere. Lu Yuan looked down and saw a white flower at his feet, and as if possessed reached out to touch it. His fingertip met a strange sensation: one side of the petal was warm as a palm, the other cold as jade. He snatched his hand back and retreated half a step, bumping into the rock behind him.
The rock wall was still there. They had come in through the body of the mountain.
"Lu Yuan." Ji Yan's voice was tight. "Look."
Lu Yuan raised his head.
And then he saw the Divine Lord.
In the years afterward, Lu Yuan would return to this moment countless times, trying to describe that being in words, and each time the words would seem pale and thin. The Lord had simply appeared, or perhaps had been there all along, and the two of them, their minds seized by the space itself, had failed to notice. The Lord stood there unclothed, white hair pouring from the shoulders like a waterfall and falling to the ankles, the ends curling faintly like flowing moonlight. The skin was a warm white, gilded with pale gold by the soft light, the shoulders broad and the waist narrow, the limbs long, the muscle clearly defined yet never coarse, as though a sculpture Michelangelo had never finished had been given life beneath the fingertips of a god.
And the face...
Only one thought remained in Ji Yan's head: neither man nor woman. The brow ridge was slightly high, the bridge of the nose straight, the line of the jaw clean, with the keen bearing of a man; but the lips were full and soft, the curve of the cheek gentle, the lashes long and thick and casting small shadows, with the delicate beauty of a woman. Most unsettling of all were the eyes. Gold, pure gold, without pupils, like two molten suns. The Lord held them half-lidded, the gaze weary and indolent, as if just woken from a sleep a thousand years long.
Ji Yan forgot to breathe. He truly forgot. The air seemed to have been drawn out of his chest, his mind gone blank, nothing left but the being before him. His knees weakened, and he felt the urge to kneel, but his body would not obey, as though nailed to the spot.
Lu Yuan kept his head down, his eyes fixed hard on the tips of his own feet. His heart was pounding as if it would leap from his throat, the hairs at the back of his neck all standing, some instinctive terror forbidding him to look up. He felt the being's gaze pass over him, light as a feather, yet pressing on his spine like a mountain.
"Oh."
The Divine Lord had spoken. The voice could not be placed as man's or woman's, clear and ethereal, like jade struck against jade, or wind passing through bamboo. In it was a thread of pure wonder, like a child discovering something amusing.
"Someone has come."
Ji Yan finally caught his breath. His knees gave way and he dropped to the ground. Lu Yuan knelt beside him. The grass was soft, and white flowers swayed gently at their knees.
The Divine Lord drew near. Those bare feet made no sound on the grass; each step seemed to fall on cloud. The god stopped before Ji Yan and bent slightly at the waist, golden eyes studying the mortal prostrate on the ground. Ji Yan felt the god's breath stir the hair at the crown of his head, carrying a fragrance he could not name, the bitter clarity of a pine bough snapping under fresh snow, the cool sweetness of spring water running over stone.
"You were looking at me the whole time," the Divine Lord said.
Ji Yan went rigid. He did not dare answer.
The Divine Lord turned to Lu Yuan. A hand reached out, the fingers long, the nails rounded and clean, and with a fingertip tilted Lu Yuan's chin upward. Lu Yuan was forced to lift his head, and his gaze collided with those golden eyes. He saw his own reflection in the twin suns of them, small and sharply drawn. The Divine Lord tilted their head, a flicker of puzzlement crossing their face.
"You dare not look at me."
Lu Yuan's lips trembled. He lowered his eyes. The Divine Lord let go and straightened, surveying the space, then glanced down at their own bare body and suddenly laughed. The smile made every flower and blade of grass in the place glow a little brighter.
"I had forgotten," the god said, and with a sweep of the hand a plain white robe appeared out of nothing and wrapped around them. The fabric settled softly along their frame. White hair spilled from the collar, still falling like a waterfall.
"Do not be afraid," the Divine Lord said. "No one has come to this place in a very long time. That you made it here at all means there is a bond between us."
The god sat down beside a cluster of white flowers, at ease, the hem of the robe spread across the grass like a fall of snow. They patted the ground beside them, inviting the two to come closer.
Ji Yan and Lu Yuan exchanged a look. Lu Yuan's lips moved, silently shaping the word Go. Ji Yan shook his head. Bracing his hands on his knees, he pushed himself up. His legs were still shaking, but he walked, one step at a time, toward the Divine Lord and sat down three chi away. Lu Yuan had no choice but to follow, and he sat even farther off than Ji Yan.
"Where do you come from?" the Divine Lord asked.
"The Western Marches. The Ji family." Ji Yan's voice was still tight. "...I am Ji Yan. This is Lu Yuan."
"Ji. Lu." The Divine Lord turned the two names over, and a faint light flickered in the golden eyes. "Good. You are the first pair of humans I have seen since I woke."
The god plucked a white flower from beside their foot and turned it slowly between two fingers. One half of the petals was warm, the other cold, and they trembled at the god's fingertips.
"Since you have come, stay a few days."
Those days were the most dreamlike of Ji Yan's life. There was no day and night; the soft light overhead fell steady and unchanging. They slept when tired and, on waking, talked with the Divine Lord. The god had no need of mortal fare, yet conjured fresh fruit and clear spring water for them. The taste of the fruit defied description. The instant you bit into it, it felt as though you had taken the whole of spring into your mouth. Lu Yuan was stiff and wary at first, but the Divine Lord's manner was gentle and unforced, as though they were merely ordinary guests, and in time he too loosened.
They told the Divine Lord a great deal. They spoke of the customs of the Western Marches, of the four seasons in the mortal world, of the old friendship between the Ji and Lu families. The Divine Lord listened closely, golden eyes fixed all the while on whoever was speaking, now and then asking a question or two, and the questions were often unexpected. When it rains in the mortal world, do you take shelter? Or: This "cold" you speak of, what is it like? Having asked, the god would fall into thought, as if filing each unfamiliar idea away in its proper place.
On the third day, if it could be called a day, the Divine Lord said abruptly, "I will bestow a blessing upon you."
The god looked first at Ji Yan. "The blood of Ji, charged with keeping the gate. I grant you the authority to watch over this place. From now on, the gate to the hidden realm in Baihu Ridge can be sensed, in its position, by the blood of Ji alone."
A hand reached out, and a fingertip touched Ji Yan between the brows. Ji Yan shuddered from head to foot as a warm current of power poured in at the point of contact and spread along his meridians to every limb. His eyes could suddenly see what they had not seen before: the boundaries of this space, the source of the soft light, and the faint patterns rising on the rock walls, ancient as the mountain itself.
Then the Divine Lord turned to Lu Yuan. "The blood of Lu, gifted with the leading of paths. I grant you the authority to discern direction. From now on, wherever you lose your way, the blood of Lu will find the road home."
The god's fingertip touched Lu Yuan between the brows. Lu Yuan closed his eyes and felt an invisible web unfold in his mind, countless points of light glimmering within it, every route as clear as if carved there. When he opened his eyes, he found the Divine Lord watching him, with something inexpressibly deep and distant in those golden eyes.
"One more thing," the Divine Lord said. The god raised a hand, and a jade pendant appeared in the palm out of nothing. It was black throughout, with golden light flowing inside it, as though a thread of sunlight had been sealed within. "This is called the Tiger-Devouring Lock. It can seal curses and protect a bloodline. The Ji family must nourish it with their blood, generation after generation, and never grow lax."
Ji Yan received the pendant in both hands. It was faintly cool to the touch, and heavy. The golden light turned slowly through the black jade as if it were alive.
"You two families," the Divine Lord said, gaze passing between the pair, "will swear to remain friends through all the generations, and to guard this secret together."
Ji Yan and Lu Yuan straightened on their knees at the same moment, raised their right hands, and swore in unison. The Divine Lord watched them, and at last a look of satisfaction rose in the golden eyes.
"Remember." The voice suddenly dropped, as deep as magma rolling in the belly of a mountain. "What happened in this place must not be spoken of beyond it. If you break this oath..."
The god stopped.
"Calamity will fall upon your descendants."
As those four words came down, Lu Yuan felt a chill shoot from the base of his spine to the crown of his head. He stole a glance at Ji Yan and saw that Ji Yan's face had gone a shade paler too.
The Divine Lord smiled again, and there was something in that smile they could not read. He reached out and raised the two of them to their feet, his palm warm.
"Go," he said. "It is time you went back."
Ji Yan and Lu Yuan passed through the narrow passage and came out again into the belly of the mountain. The rain had stopped. Beads of water on the vines at the cave mouth caught the daylight and glittered. The two walked a long way in silence, until the soft glow of the Divine Lord's dwelling had vanished completely into the darkness behind them, and only then did Ji Yan let out a long breath.
"Lu Yuan," he said, "we have seen a god."
Lu Yuan did not answer. He looked back once at the black mouth of the cave, and the thread in his chest, so fine it was barely there, drew tight again.
"Mm," he said at last. "...We have seen a god."
Once they were home, Ji Yan told the elders of his clan what had happened.
Lu Yuan stood outside the door and heard the elders inside, their voices low and barely containing their excitement. His nails dug into his palm, leaving four shallow crescents. He wanted to push the door open, to say, The Divine Lord said it must not be told. But the door had been bolted from within.
Three days later, a number of the Ji clan's best men slipped quietly out of Divine Lord Village. They carried ropes, torches, and blades, and something else, a greed that Lu Yuan could not put a name to. He stopped Ji Yan, his voice shaking. "You made a promise to Him."
Ji Yan avoided his eyes. "The elders are only going to take a look..."
"You made a promise to Him!"
Ji Yan was silent for a long time. At last he said, "Lu Yuan, that is a god. A god's power... if the Ji clan could take hold of it..."
Lu Yuan looked at him as though at a stranger. He took one step back, then another, and finally turned and walked away. His figure grew smaller in the dusk until it vanished behind the locust tree at the village entrance.
Ji Yan did not go after him.
Seven days later, the men of the Ji clan returned. They brought back a single petal from the white flowers of the Divine Lord's dwelling, and they brought wounds, for they had been hurled out of the hidden realm by some unseen force, like ants swatted away by a giant's palm. The petal withered the very night it reached the Ji household and turned to ash. And then the Divine Lord's voice rang out in the minds of every one of them at once, like a mountain collapsing, like the sea rising, like the first thunderclap at the dawn of heaven and earth:
"You have broken your oath."
Ji Yan knelt before the ancestral hall, shaking from head to foot. He heard the voice go on, each word like red-hot iron, branding itself into the deepest roots of the Ji bloodline:
"The Ji bloodline shall suffer the tiger's punishment. After death, their souls shall be devoured by me, and shall not enter the cycle of rebirth."
"The world shall break because of this. And I shall appear no more."
At last the voice sank lower, so low that only Ji Yan could hear it, a whisper against his ear:
"Lu Yuan was not wrong. You were."
Ji Yan lifted his head, his face wet with tears. The doors of the ancestral hall stood wide open, and the sky outside had at some point turned a thick, dark red, like an enormous wound stretched across the heavens. He scrambled to his feet and stumbled out at a run. He would go to the Lu house. He would find Lu Yuan. He would say he was sorry, say he had been wrong, say...
The gates of the Lu house were shut fast. A dim light leaked through the crack, but no one answered his knocking. Ji Yan pounded on the door for half an hour before Lu Yuan's hoarse voice finally came from within, low, like an echo rising from underground:
"Ji Yan. Go away."
"Lu Yuan..."
"The Divine Lord punished the Ji clan." Lu Yuan's voice paused. "But can you guess why He did not punish the Lu clan?"
Ji Yan stood frozen outside the door.
"Because I tried to stop it. I knelt for three days and three nights. I knocked my head against the ground three hundred times, begging Him to punish only the Ji clan." There was a weariness in Lu Yuan's voice that Ji Yan had never heard before. "The Divine Lord said the Lu clan guides, and what we guide is the righteous path. I did my duty, so the Lu clan is without guilt."
Ji Yan's knees gave way, and he sank to the stone steps before the Lu house.
"But Ji Yan," Lu Yuan said, and at last his voice trembled, "from this day on, the Lu clan and the Ji clan have nothing to do with each other."
The light inside went out. Ji Yan knelt in the dark, for a very, very long time. Only when the dark red had drained from the edge of the sky and left a pale, bleak dawn did he slowly get to his feet and drag himself home. He knew that what he had lost was more than Lu Yuan's friendship. He had lost something more precious, more fragile, something that could never be mended again.
Less than ten years after that, Lu Yuan died, his heart unfulfilled. The Lu clan drew away from the Ji clan, its numbers dwindling, and the old friendship between the two great houses of the western borderlands became like a forgotten dream.
Ji Yan lived on alone, to a very great age. On the last night of his life, a single white flower from the Divine Lord's dwelling bloomed outside his window, warm on one half and cold on the other. He reached out to touch it, and the petals crumbled to drifting ash at his fingertips.
"Lu Yuan," he said to the empty room, "I'm coming to find you."
When he closed his eyes, there was a smile at the corner of his mouth. But the Divine Lord did not forgive him.
Before his soul was devoured, he saw Lu Yuan. Lu Yuan stood beside a river, gazing at him from far away, his face still that of a young man. He did not come closer. He only raised a hand and pointed past Ji Yan, behind him.
Ji Yan turned.
At the end of the road lay White Tiger Ridge. The cave. The soft glow of the Divine Lord's dwelling.
"You must go back," Lu Yuan's voice came from very far away. "Keep that door... for me."
In the last moment before the darkness swallowed his soul, Ji Yan nodded.
And Lu Yuan's figure by the river faded, like a drop of ink falling into clear water, dispersing until nothing was left.
From then on, the Ji clan guarded that door, generation after generation. They guarded a forgotten promise, a god's wrath, a wrong that could never be made right. And the name of the Lu clan grew fainter and lighter on the winds of the western borderlands, until almost no one remembered it.
Until fifty years later.
Until a child named Lu Yunle grew up in the care of a loyal servant, and slowly, over the years, the mark of a tiger surfaced on his chest, like a brand laid down by fate.
Until three years ago.
Until Ji Bochang, in the mists of White Tiger Ridge, saw a black-haired young man turn his head, his bewildered gaze like a mirror, reflecting the faint, shifting trace of the white tiger on his own chest.
And far away in the depths of the hidden realm, the Divine Lord opened golden eyes, then slowly closed them again.
"The child of the Lu family," the deity murmured, "has come back."
The deity rolled over, white hair spilling across the grass. At their feet the white flowers trembled faintly, warm on one side, cold on the other.
"This time," the voice dropped so low it was almost inaudible, "let him choose for himself."
Soft light fell. The flowers and grasses bloomed through every season, never fading.
And in the world outside the cave, on the very edge of collapse, bit by bit, came the faint sound of cracking.