The Western Gate of the Emerald Capital loomed like the ribcage of a gargantuan, dying beast. Constructed from Veridian Basalt and reinforced with plates of Corrosive Brass, the gatehouse stood three hundred feet tall, perpetually shrouded in a swirling vortex of toxic green vapor. This was the "Emerald Filter," a massive array designed to strip any "unauthorized" purity from the air before it reached the high-tier cultivation gardens of the inner city.
Han Feng peered through a knot-hole in the back of Master Zhou's lead wagon. Outside, the line of merchants stretched for miles. The air was thick with the smell of wet soot, rusted metal, and the low, rhythmic hum of the Qi-Scanning Pillars.
"Stay low, and for the love of the Heavens, keep that mirror covered," Master Zhou hissed, wiping nervous sweat from his upper lip. "The guards today are from the Green-Scale Battalion. They don't take bribes; they take fingers."
Han Feng felt the Purification Mirror pulse against his chest. Even cracked, the artifact was reacting to the intense concentration of Tainted Qi in the gate's array. He utilized the Void-Filter Heart technique, slowing his heartbeat and pulling his presence inward until he felt as unremarkable as a smooth stone in a riverbed.
As the wagon rolled forward, the light dimmed under the shadow of the gatehouse. Four guards in jade-plated armor surrounded the carriage. Their eyes were hidden behind tinted glass lenses, and they carried Miasma-Halberds that crackled with unstable energy.
"Merchant Pass 449. Master Zhou's Small-Profit Trading Company," one guard barked, his voice distorted by a mechanical respirator. "Cargo: Dried fish, low-grade herbs, and... three passengers?"
"Mercenaries, Captain! For protection against the road-ghouls!" Zhou chirped, flashing a toothy, desperate smile.
The guard stepped to the back of the wagon and ripped the heavy canvas aside. The dim light hit Han Feng, Lin Xiruo, and Su Yue. Lin Xiruo kept her straw hat low, her hand resting loosely near the Heaven-Shatter Scabbard hidden beneath a bundle of furs.
"Identify yourselves," the guard commanded, leveling his halberd at Han Feng's throat.
"Vagabonds from the Southern Reach," Han Feng said, pitch-perfectly mimicking the raspy, tired tone of a lowland wanderer. "Looking for work in the Refiner's District. My hands are good for the bellows."
The guard narrowed his eyes. "Step out. Walk through the Pillar of Truth."
Su Yue stiffened. The Pillar of Truth was a simplified version of the sect's testing monoliths, but it was tuned to detect "Extreme Purity"—the very thing that would mark Han Feng as a fugitive.
As Han Feng stepped toward the glowing green pillar, a carriage of polished black bone pulled up beside them, bypassing the line. The curtains parted to reveal a young man with skin as pale as milk and hair dyed a shocking, artificial violet. He wore the silver-trimmed robes of an Imperial Alchemist Apprentice.
"Move this dung-cart out of the way!" the youth snapped, pointing a slender, ring-covered finger at Master Zhou's wagon. "I have a delivery of Rot-Binding Mercury for the High Alchemist. If the temperature drops another degree, the entire batch is ruined!"
The guard hesitated, his attention diverted. "Young Master Yan, my apologies. We are just conducting a routine scan on these—"
"Scans? For what? This boy smells like fish and cheap charcoal," Yan sneered, glancing dismissively at Han Feng. "If he had enough Qi to be a threat, he wouldn't be riding in a wagon full of sun-dried cod. Let them through so I can pass!"
The guard, fearful of offending the Alchemist Union, stepped back. "Very well. Move along, Zhou. Don't let me catch you lingering in the High Plaza."
As the wagon lurched forward into the city, Han Feng caught Yan's gaze for a split second. The apprentice's sneer didn't change, but his eyes—sharp and calculating—lingered on Han Feng's chest for a moment too long. He had felt something.
Inside the walls, the Capital was a nightmare of architectural beauty and spiritual rot. The buildings were tall and narrow, leaning over the streets like vultures. The wealthy elite walked on elevated glass walkways, breathing through elegant silken masks, while the "Filter-Slaves" worked in the gutters below, their skin stained a permanent, sickly green from scrubbing the streets.
"We need a place to go," Lin Xiruo said, her voice a low murmur. "The apprentice... he knows."
"He knows I'm not a beggar," Han Feng agreed, his hand tightening on the Azure Phoenix Wing hidden in its wooden disguise. "But he didn't turn us in. He wants something."
"People in this city don't help for free," Su Yue added, her eyes darting toward the shadows where Clockwork Spies—tiny mechanical spiders—scuttled along the walls. "They help so they can own you later."
"Let him come," Han Feng said, looking toward the center of the city, where a massive, floating palace of green jade hung in the sky like a poisoned moon. "I need the Star-Silk to fix the Mirror. If an Imperial Apprentice is the key to getting into the Great Refining Competition, I'll play his game."
Master Zhou led them to a dilapidated warehouse in the Sludge District, a place where the air was so thick with smoke that the sun was a mere ghost.
"Stay here," Zhou whispered. "I'll see what I can find out about the Star-Silk. But remember: in the Capital, the walls have ears, and the ears are made of brass."
Hours later, as night fell and the green mists of the city began to glow with a bioluminescent hunger, a knock came at the warehouse door. It wasn't the rhythmic tap of Master Zhou. It was a sharp, demanding sequence.
Han Feng opened the door. Standing there, sans his carriage and guards, was the apprentice, Yan. He held a small, glowing orb that pulsed with a neutralizing frequency, creating a bubble of silence around them.
"The Purification Mirror is a myth," Yan said without preamble, his violet hair shimmering in the dark. "But the resonance I felt at the gate... it was too clean. Too old. You aren't a vagabond. You're the one who broke the Cloud-Mist Sect."
Han Feng's Stage 4 Qi flared, the Vines of the Verdant Warden uncoiling slightly beneath his sleeve. "And if I am?"
Yan didn't flinch. Instead, he pulled a small, shattered vial from his pocket. Inside was a single drop of perfectly clear water—a Tier 1 Purity Elixir, but one that had been "Restored."
"My Master, High Alchemist Pil, is a genius of the Rot," Yan said, his voice dropping to a hiss. "But even he cannot fix a 'Dead Core.' I don't want to turn you in, Han Feng. I want you to win the Great Refining Competition for me. I want you to teach me how to make things... stay clean."
Han Feng looked at the boy. There was no loyalty in Yan's eyes, only a desperate, starving ambition. It was a dangerous alliance, but it was exactly the "stroke of luck" a fugitive needed.
"I need the Star-Silk," Han Feng said.
"Then you'll need an invitation," Yan replied, a predatory smile stretching his pale lips. "And I happen to have a spare."