The corridor bent downward, then downward again, as if the realm was slowly feeding them into its throat.
The air grew drier. The damp stone smell faded into something mineral and old, like sealed vaults and buried metal. The etched sword motifs on the walls thinned until they were only occasional marks, as if whoever built this section cared less about pride and more about function.
No one spoke.
After the illusion mist, voices felt risky. Words could be twisted. Words could be bait. Everyone clung to silence like a charm.
Shen Lu walked carefully, fingers curled around the frost marrow bead inside his sleeve. It sat against his palm like cold moonlight, steadying his raw channels. He could feel it working slowly, soothing damage, sealing tiny fractures in his foundation. It wouldn't restore what he'd lost, not quickly. But it was proof that his body still had a future.
That proof was dangerous.
Because it had come from Helian Feng.
Helian Feng walked half a step ahead now, as if reclaiming distance after the conversation. His posture was perfect again. His eyes were cold again. But the cold felt… managed.
Like a man controlling a wound under armor.
The group reached a narrow chamber where the corridor split into two low tunnels. The ceiling was so low that even the sword lineage disciples had to tilt their heads. A faint current of air drifted from the left tunnel, carrying a dusty scent. The right tunnel smelled cleaner but too still, as if it had not been breathed through in a long time.
Helian Feng stopped.
The severe talisman disciple stepped forward immediately, placing a detection charm at the junction. The charm flared faintly, then wavered.
"Interference," the disciple murmured. "There's formation residue in both."
The beast tamer's fox-spirit crouched and pressed its nose to the stone, then sneezed and backed away, ears pinned.
"Not good," the beast tamer whispered.
Helian Feng's gaze narrowed. "Left or right."
Shen Lu stared at the tunnels and felt his stomach twist.
He recognized this too.
In the book, the left tunnel contained a pressure plate trap that triggered a collapse. The right tunnel was safer structurally, but it held a soundless seal that drained qi slowly—an array designed to weaken intruders until they could be taken by something deeper.
Left killed fast.
Right killed slow.
Neither was kind.
Shen Lu's throat tightened. He couldn't keep "smelling" the right answer without Helian Feng's suspicion turning into certainty. But if he stayed silent, Helian Feng might choose wrong, and a wrong choice here could split them or kill someone immediately.
Shen Lu forced himself to speak in the smallest, least precise way.
"The right tunnel feels… too clean," Shen Lu said quietly. "Like a place that hasn't been walked. That makes me nervous."
Helian Feng's gaze snapped to him, sharp.
Shen Lu kept his face blank. "Maybe it's nothing."
Helian Feng stared for a long moment, then looked toward the right tunnel again.
Helian Feng's voice came out flat. "Left."
The sword lineage disciples shifted, relieved to choose something straightforward.
Shen Lu's stomach tightened.
Left was not straightforward.
But sometimes your only chance in a trap was to choose the trap you could predict.
They entered the left tunnel in formation, steps light. The tunnel was tight enough that their shoulders nearly brushed. Talisman light flared faintly, painting gold on stone. Shen Lu kept his eyes on the floor, searching for the pressure plate seam he remembered.
He found it.
A thin, almost invisible line across the stone, placed where an average stride would land.
Shen Lu's breath hitched.
Helian Feng was leading.
Helian Feng's boot lifted, moving forward.
If Helian Feng stepped on it, the ceiling would drop. Stone would crush. Formation lines would trigger. Even if Helian Feng survived, someone behind him would be smashed.
Shen Lu's body moved before his mind could negotiate.
He grabbed Helian Feng's sleeve and yanked hard.
Helian Feng's foot stopped mid-step.
Helian Feng whirled, eyes blazing. "What."
Shen Lu's throat went dry. He couldn't say, Pressure plate. He couldn't say, Collapse array. Not without sounding like a man reading from a script.
He pointed down sharply. "That stone. It's cut."
Helian Feng's gaze snapped to the floor.
He saw it.
Because Helian Feng was observant. He just hadn't been looking at the right angle.
Helian Feng's jaw tightened. He withdrew his foot carefully and shifted his weight back.
The severe talisman disciple moved forward, placed a charm, and the charm flared violently—then dimmed into a warning glow.
"Trigger plate," the disciple said, voice shaking. "Collapse formation."
The tunnel went silent.
The sword lineage disciples stared at the seam as if it had personally insulted them.
The beast tamer swallowed audibly.
The outer disciple looked like he might cry.
Helian Feng didn't look at Shen Lu immediately.
He stared at the pressure plate for a long time, then stepped over it with controlled precision, placing his boot exactly where it was safe.
One by one, the team followed.
Shen Lu stepped last, heart hammering.
As he crossed, he felt Helian Feng's gaze on him like weight.
They continued through the tunnel, and Shen Lu knew Helian Feng was counting. Counting how many times Shen Lu had saved them with knowledge that shouldn't exist. Counting how many times Shen Lu had reacted before danger became obvious.
That tally was a trap of its own.
The tunnel opened into a larger cavern.
This one wasn't carved cleanly. It looked natural, jagged stone forming teeth-like ridges. In the center stood a slab of pale rock with a faintly glowing formation circle etched into it. Around the slab were broken weapon fragments—rusted blades, snapped spearheads—as if many had come here before and left pieces behind.
A sacrifice site.
Or a trial.
Helian Feng raised a hand, stopping the group again.
The cavern felt… watching.
Shen Lu's skin prickled.
A low hum filled the air, faint but persistent, like a distant string being plucked.
Xie Han would have heard it and laughed, Shen Lu thought absurdly, because music cultivators always heard what other people ignored.
But Xie Han wasn't here.
No one was here except them and the realm's appetite.
The talisman disciple stepped toward the slab and placed a detection charm.
The charm flared bright, then burned to ash instantly.
Everyone flinched.
Helian Feng's eyes narrowed. "Back."
The group retreated a step.
Shen Lu stared at the slab and remembered another detail from the book: this was a "paywall" formation. It demanded something to open the next route. Not treasure. Not blood. A piece of qi. A piece of cultivation.
A toll.
Shen Lu's stomach twisted.
They could choose to pay. Lose a sliver of strength each, and pass.
Or refuse, and get stuck until rivals caught up and turned this cavern into a slaughterhouse.
Helian Feng's gaze flicked over the slab, then to the broken weapon fragments. He understood.
"This formation demands a toll," Helian Feng said.
The outer disciple's eyes widened. "A… toll? Like what."
Helian Feng's voice was flat. "Qi."
The outer disciple's face went white.
One sword lineage disciple sneered. "We can break it."
Helian Feng's gaze cut him. "Try."
The disciple lifted his sword and slashed at the formation circle.
The moment the blade touched the etched line, a pulse of force exploded outward.
The disciple was thrown backward into the cavern wall with a sharp cry. He slid down, coughing, blood at the corner of his mouth.
Helian Feng didn't move to help him.
He watched him cough, then said coldly, "Now you paid anyway."
The disciple's face twisted with humiliation and pain.
The cavern went silent again.
Helian Feng turned to the group. "We pay properly. A controlled portion. Then we move."
The talisman disciples nodded reluctantly. The beast tamer swallowed. The outer disciple's hands shook.
Shen Lu's core tightened.
He couldn't afford to pay.
He had already lost too much. His foundation was cracked and only just beginning to stabilize. Offering qi to a toll formation might not just weaken him. It might collapse him.
Shen Lu's throat went dry.
Helian Feng's gaze slid toward him.
Shen Lu knew Helian Feng would say it: you pay too. If you don't, you're dead weight. If you don't, you're not part of the formation. If you don't, you become the sacrifice.
Shen Lu's hands clenched inside his sleeves.
He hated that he was afraid.
He hated that he wanted to live anyway.
Helian Feng's voice came out low. "You."
Shen Lu's stomach dropped.
Helian Feng didn't say "pay."
Helian Feng said, "Stay back."
Shen Lu blinked. "What."
Helian Feng's eyes narrowed slightly, as if annoyed that Shen Lu didn't understand immediately. "You're unstable. You don't pay."
The cavern went still.
One talisman disciple looked sharply at Helian Feng. The beast tamer's eyes widened. Even the outer disciple looked confused.
The sword lineage disciple who had been thrown back glared, wiping blood from his mouth. "Senior Brother Helian—"
Helian Feng's gaze cut him. "Quiet."
Shen Lu stared at Helian Feng.
It didn't make sense.
Not under righteous logic. Not under the sect's treatment of him. Not under Helian Feng's own harsh rules.
Helian Feng was choosing to take the toll himself rather than making Shen Lu do it.
Help given where no one could see.
No praise. No witnesses who would call Helian Feng merciful. No benefit except keeping Shen Lu from collapsing.
Helian Feng stepped toward the slab.
He didn't kneel. He didn't bow. He simply placed two fingers on the formation circle and pushed a controlled portion of thunder-root qi into it.
The slab flared.
The hum deepened.
Then the slab drank.
Shen Lu felt it in the air: a pull, a brief pressure shift. Helian Feng's shoulders tightened slightly. His jaw clenched once. Then it was done.
The talisman disciples went next, offering measured amounts. The beast tamer did too, fox-spirit whining as if sensing its master's qi being siphoned. The outer disciple offered a trembling sliver and nearly collapsed from the fear of losing anything at all.
The formation circle glowed bright.
Then the cavern wall to the right shuddered and split, revealing a narrow passage beyond, lined with faint light.
A door bought with cultivation.
Helian Feng turned and looked at Shen Lu.
His eyes were cold as ever.
But his voice came out low, controlled. "Move."
Shen Lu's throat tightened.
He wanted to say thank you.
He wanted to demand why.
He wanted to joke, because jokes were safer than gratitude.
He said nothing.
Because Helian Feng had helped him where no one could see, and acknowledging it aloud might make Helian Feng regret it.
They moved through the opened passage.
As Shen Lu stepped into the new corridor, he felt the frost marrow bead's cold clarity pulse once in his palm, and with it came a sharp, unwanted realization:
Helian Feng was not only keeping him alive for judgment anymore.
Helian Feng was making choices that looked dangerously like care.
And that kind of help was the hardest trap of all.