Chapter 107: Three Chimneys

# Chapter 157: Three Chimneys

Three Chimneys was a forge town.

Not like the village smithies Zhao Feng had seen in other provinces—single-anvil operations where a man with a hammer made horseshoes and kitchen knives. Three Chimneys was a town that existed because Thunder Gate existed. Three foundries, each with its own chimney stack—hence the name—fed by ore from the hills to the south and coal from the lowland mines to the east. The air tasted like iron. The buildings were blackened from decades of soot. The people walked with the gait of a population that worked around heat for a living—wide stances, rolled sleeves, the permanent squint of eyes that spent hours near molten metal.

Iron Heart was at the second foundry.

Not inside it—outside, sitting on an overturned barrel near the foundry's loading dock, watching the apprentices move pig iron from a cart to the storage racks. He had a mug of something in his hand. His massive arms were crossed, the burn scars catching the foundry's glow. He looked like he belonged here, which was the point—a retired blacksmith visiting a working foundry attracted no attention in a forge town.

He saw them approach. His eyes moved across the group—Zhao Feng, Lin Yue, Wei Changshan, Shen Ru, Xiao Bai. He grunted.

"Hmm." The grunt meant: you're here, you're alive, and I'm going to need a minute.

He stood. Picked up a canvas bag from beside the barrel. Walked to the road without looking back to see if they followed.

They followed.

---

Iron Heart had rented a room above a coal merchant's shop at the town's east side. The room was large enough for the group because Iron Heart's idea of "enough space" was based on forge work, where you needed room to swing a hammer without hitting the person next to you.

He set the canvas bag on the table. Pulled out a wrapped bundle. Unwrapped it.

A hammer head. Not a finished tool—the head alone, unhandled, the metal dark with the dark coloration of steel that had been folded and refolded past what normal forging could achieve. The head was square, eight pounds at a guess, the striking face smooth and the peen face filed to a chisel edge.

"Hmm," Iron Heart said. Pointing at the hammer head. Then at Zhao Feng.

"For me?" Zhao Feng said.

"Hmm." The affirmative grunt, followed by a gesture toward the chain guard. Then a gesture toward the hammer head. Then a gesture that involved both hands moving in a connecting motion.

"For the chain guard," Shen Ru translated. She had been traveling with Iron Heart long enough to read his vocabulary. "He's made a fitting for the chain guard's hilt that can accept the hammer head as an attachment."

Iron Heart looked at Shen Ru with mild surprise—he'd been about to spend three minutes explaining this through gestures, and she'd cut the process to ten seconds.

"Hmm." Approval.

He picked up the chain guard from where Zhao Feng had set it on the table. His hands on the weapon were different from anyone else's—not the grip of a fighter, the grip of a craftsman. He turned it, examined the hilt, the chain, the guard. Produced a small tool kit from the canvas bag and began working.

"The forge spirit," Zhao Feng said.

Iron Heart didn't look up. "Hmm." The grunt that meant: I'm listening, but my hands are busy.

"The seventh seal's coordination network is gone. We dissolved the guardian at the Jade Maiden Pavilion—the bound practitioners released their binding. The dissolution broke the communication backbone for all twelve seals." He paused. "The forge spirit's containment protocols were part of that network. Temperature limits, engagement range, response patterns. All gone."

Iron Heart stopped working.

He looked at Zhao Feng. The look was the one he used when someone said something that required more than a grunt to process. His hands were still on the chain guard, but the tool had stopped moving.

Then he put the chain guard down. Slowly.

He held up both hands, palms out. Made a shape with them—a circle, then expanded the circle outward, then made an explosion gesture.

"Without the protocols," Shen Ru said, "the forge spirit's heat output is—"

Iron Heart shook his head. Not the heat output. He pointed at the floor. Then at the walls. Then at the ceiling. Then he made the explosion gesture again, bigger.

"The forge itself," Zhao Feng said. "The heat doesn't just come from the spirit. It comes from the forge. The Grand Forge at Thunder Gate."

"Hmm." The emphatic affirmative.

Iron Heart pointed at himself. Then at the floor. Then made a building gesture with his hands. Then pointed at the chain guard. Then made a chain gesture—links connected, a long line.

"He built the forge," Lin Yue said. "And the forge is connected to the chain guard. To the seal."

Iron Heart shook his head again. More specific. He pointed at himself. Made the building gesture. Then made a different gesture—hands pulling apart, separating. Then pointed at the chain guard.

"He built the forge to contain the seal," Shen Ru said. "The forge is the containment. Not the protocols—the forge itself."

"Hmm." The satisfied grunt of someone finally being understood.

"So the forge spirit's containment protocols were redundant," Zhao Feng said. "The network protocols added a second layer of control, but the forge's own structure is the primary containment."

Iron Heart held up one finger. Then pointed at a spot on the chain guard's hilt—a specific point where the chain attached to the guard.

"One condition," Shen Ru said.

Iron Heart nodded. He made a gesture—hands together, then twisting apart, then together again. A cyclical motion.

"The forge has to be active," Wei Changshan said. He'd been watching the gestures from his position against the wall, jug in hand. "The forge's containment works when the forge is running. If someone shuts down the forge—"

Iron Heart pointed at Wei Changshan with the expression of a man who appreciated it when the drink-carrying one got there first.

"Hmm." Strong affirmative.

"The Shadow Emperor knows we're coming," Zhao Feng said. "He knows the seventh seal's network collapsed. He knows we're heading to Thunder Gate."

Iron Heart looked at him. Made a single gesture—a hand drawing across the throat.

"If the Shadow Emperor tells Thunder Gate to shut down the Grand Forge before we arrive," Shen Ru said, "the primary containment fails. The forge spirit operates at full power. No protocols, no structural containment. Just the spirit's natural state."

"Which is," Zhao Feng said.

Iron Heart looked at the foundry glow through the window. The second foundry's chimney stack, belching smoke and heat into the evening sky. He looked at it for a long time.

Then he spoke.

"Hot." One word. The most he'd said in a continuous sound since Zhao Feng had met him. "Very hot."

The room was quiet.

"How hot," Wei Changshan said.

Iron Heart looked at him. Made a gesture—pointing at the foundry's chimney, then multiplying the gesture, ten times, twenty. Then he pointed at the hammer head on the table. Made a melting gesture.

"The hammer head," Zhao Feng said. "The hammer head he just forged—it would melt."

"Hmm."

The hammer head was sitting on the table. Eight pounds of dense steel, the product of specialized forge work. Zhao Feng didn't know the melting point of whatever alloy Iron Heart had used, but given that the man was a former Thunder Gate master who had spent decades working with the most advanced metallurgy in the martial world, the metal wasn't cheap steel.

"We need the forge running when we enter," Zhao Feng said. "The containment has to be active."

Iron Heart nodded.

"And the Shadow Emperor is going to try to shut it down before we get there."

Iron Heart nodded again.

---

They spent the evening planning.

Iron Heart drew maps. His hands, so precise with tools, were rough with ink—the sketches were functional rather than artistic, the Grand Forge's layout rendered in thick lines that showed walls, passages, the forge's central chamber, the seal's location within it.

The Grand Forge was underground. Built into the mountain that Thunder Gate's compound sat on, the forge extended down into the rock, using natural heat from geological sources as a supplement to the coal furnaces that fed the forge's primary function. The seal was at the deepest level—the eighth layer, Iron Heart indicated by holding up eight fingers—where the forge's natural heat was strongest and where the forge spirit had been bound during the original Sealing.

"Access," Lin Yue said, studying the map. "How many ways down to the eighth layer."

Iron Heart held up two fingers. Main shaft—a central descent that ran from the forge's ground-level entrance to the bottom—and a service shaft that ran parallel, used for ventilation and emergency access.

"The main shaft will be guarded," Lin Yue said. "If Thunder Gate's leadership knows we're coming."

"Thunder Gate's leadership may not be the problem," Shen Ru said. She had been quiet through the planning, reviewing the formation notes from Qing Luan's documentation. "The Shadow Emperor's agent inside Thunder Gate—we identified the code name system. Thunder Gate's agent would be—" She checked her notes. "The correspondence doesn't identify Thunder Gate's agent by name. Only by the sect." She paused. "But the agent's role is the same as Willow's at the Pavilion: feeding information to the Shadow Emperor's network and executing instructions."

"Instructions like shutting down the forge," Zhao Feng said.

"If the agent has the authority to order it," Shen Ru said. "The Grand Forge is Thunder Gate's most valuable asset. Shutting it down requires either the Sect Master's authorization or a safety emergency."

"Then the agent will create a safety emergency," Lin Yue said.

Iron Heart grunted. He pointed at his map—at the service shaft. Then at himself.

"He goes in through the service shaft," Wei Changshan said. "While we go in through the main."

Iron Heart shook his head. Pointed at the service shaft again. Then at a specific location on the eighth layer. Then made his building gesture—hands assembling, connecting, the motion of someone putting a forge back together.

"He goes in through the service shaft and keeps the forge running," Zhao Feng said.

"Hmm." The strongest affirmative Iron Heart had given all evening. He pointed at himself, at the service shaft, at the forge diagram. Then he pointed at Zhao Feng, at the main shaft, at the seal.

"He maintains the containment while I break the seal," Zhao Feng said. "Two approaches. Simultaneous."

Iron Heart held up the hammer head. Made the fitting gesture again—attaching it to the chain guard.

"The hammer head is for the forge," Shen Ru said. "Not for combat. He's giving you a tool that can interact with the forge's formation structure." She looked at the hammer head. "The metal is forge-grade. The same alloy used in the Grand Forge's structural components."

Iron Heart made the satisfied gesture again. Then he picked up the chain guard and resumed working—fitting the hammer head attachment to the hilt, his hands steady, his face blank with the focus of a man doing the only thing he was built to do.

Zhao Feng watched him work. The burn scars on Iron Heart's forearms. Hands that had spent fifty years at a forge, then walked away, and were now—in this room above a coal merchant's shop—doing the work they'd been made for.

Iron Heart had built the Grand Forge. Had built the chains used in the Sealing. Had walked away from Thunder Gate carrying guilt he'd never spoken about in more than grunts.

Now he was going back.

"Iron Heart," Zhao Feng said.

The old man looked up.

"When we enter the forge. The people there—they'll know you."

"Hmm." The quiet grunt. The one that carried things he wasn't going to say.

"How long since you left."

Iron Heart held up both hands. Opened and closed them twice. Forty years.

"Will they let you in."

He looked at the chain guard in his hands. At the hammer head. At the map on the table.

Then he made a gesture Zhao Feng hadn't seen before—hands moving forward, pushing through something invisible, the motion of someone who was going to go through a door regardless of whether it was open.

Wei Changshan raised his jug.

"That's the spirit, old fellow."

"Hmm."