The Crystal Golem was slow.
The gap between its movement speed and the group’s movement speed was sufficient that passing it on the right side of the corridor was a logistics problem rather than a combat problem, keep the formation tight, keep the injured students away from the Golem’s reach radius, move through before it could redirect. Yuan ran the geometry by proprioceptive map and called it.
"Single file, right wall, move fast. Don’t stop for it."
Li Meilin’s group understood immediately, S-rank and A-rank students processed tactical instructions at a different rate than the first-years, the information converting to action before the sentence was finished. Zhang Wei had the two first-years moving before Yuan had turned to face the Golem.
The Golem reached for the last person in the formation and Yuan took the reach on his shoulder. Enhanced Stony Skin distributed the impact across his upper back and he stepped into it rather than away, using the contact surface to slow the arm’s extension, buying the last student the half-second of margin they needed.
Then he was through and the Golem was behind them and they were in the central corridor moving upward.
The proprioceptive map updated.
"They’re adjusting," he said. "The fourteen are redistributing, they can track the group’s movement. The two C-ranks from the anomaly cluster have turned. Eastern approach, two minutes."
"Can we beat the junction?" Li Meilin said, from the front of the formation where she’d positioned herself without discussion.
"Not on current pace. The injured students are the constraint."
She processed that without breaking stride. "Options."
"The western secondary passage I mentioned. Narrower, one entrance and one exit, the Golems can’t fit through it. The four corridor-native types can, but their mana signatures are more manageable than the Golem cluster." He paused. "And there’s a chokepoint sixty meters in where a two-person defensive line is sufficient to hold the passage while the group moves through."
Li Meilin turned her head slightly. "You and me at the chokepoint."
"That was the thought."
Jiang Rui, from somewhere in the middle of the formation: "You two have never fought together in any capacity and you’re already planning chokepoint defense."
"We’ve been fighting together for an hour," Yuan said. "She just didn’t know it."
He felt Li Meilin not respond to that in a way that suggested she was filing it alongside everything else she was accumulating about him.
The western secondary passage was tighter than the main corridor — two abreast at most, the crystal formations from the lower level giving way to raw cut stone and a ceiling that dropped enough to make the Golems a structural impossibility. The formation compressed without complaint, the A-rank students managing the transition efficiently, Zhang Wei keeping the two first-years in the protected center with the systematic care he’d been applying to student welfare since the main hall.
The chokepoint was a natural bottleneck, the passage narrowed further at a section where the dungeon’s original architects had cut through a harder geological layer, leaving walls that jutted inward to reduce the walkable width to approximately three meters. Behind it, the passage widened again and ran straight to the upper access stairs.
"Get them through," Yuan said. "All the way to the stairs. Don’t wait."
Zhang Wei looked at him. One second, no words, the same look from the junction earlier. Then he moved the group forward and Yuan turned to face the passage entrance alongside Li Meilin.
The first of the four corridor-native types arrived forty seconds later.
They were Dungeon Crawlers, the same type he’d encountered on the fourth level during the Salamander hunt, C-rank, quadrupedal, mana composition dense and cold. Fast enough to use the passage’s width efficiently, smart enough to recognize a bottleneck and approach it carefully rather than committing fully before assessing.
Two of them stopped at the passage entrance and the third came forward alone.
Li Meilin solved it before Yuan had finished reading the approach pattern. Ice formation — not the sweeping area coverage she’d used in the main hall but a precise penetrating structure, three points delivered in sequence to the Crawler’s lateral mana channels. The creature went down in under two seconds and she was already building the next formation.
Yuan went wide on the right wall and Ember Shot took the second one before it processed the first one’s defeat. The third and fourth came together and he activated Shadow Step to flank while Li Meilin held the center and they were done in forty seconds.
[Ding!]
[C-Rank Dungeon Crawler defeated. Experience +65]
The formation was clean. No discussion required, no coordination signals — she pushed center and he went wide, and the geometry worked because they’d both been doing variations of this pattern since the Gargoyle King fight and the muscle memory was already established even if the mutual awareness of it wasn’t.
Li Meilin noticed. He could tell by the slight adjustment in how she positioned herself for the next contact, anticipating his flanking movement rather than treating it as independent variable.
They moved up.
The main corridor converged with their route at the second-level junction and the fourteen became eleven became eight as the Blight residue continued to dissipate and the agitated native monsters gradually processed that the elevated mana stimulus was fading. Yuan tracked the count through the proprioceptive map and relayed updates to Li Meilin in the compressed intervals between contacts.
The Orc Berserker came out of a side alcove at the first-level junction, a proper ambush, the creature having been in the alcove before the group arrived, the proprioceptive map registering it as stationary and therefore sorted into designated zone, non-hunting when it had actually been stationary because it was waiting.
He corrected his threat assessment model as he activated Shadow Step.
The Berserker was fast for its size. He came out of the skill at its flank and it turned faster than the architectural mass should have allowed and he took the backhanded strike across his chest, Enhanced Stony Skin absorbing it, the A-rank passive earning its maintenance cost, his HP dropping fourteen points that he noted and filed.
Li Meilin put an ice spike into the joint Yuan was already targeting and the Berserker went down.
[Ding!]
[C-Rank Orc Berserker defeated. Experience +100]
The Frost Spider that dropped from the ceiling two corridors later he handled while Li Meilin was managing the residual anomaly C-ranks from the eastern approach, Sonic Absorption taking the Spider’s sonic component and Flame Breath covering the gap where his MP was stretched thin.
[Ding!]
[C-Rank Frost Spider defeated. Experience +85]
[Ding!]
[Level Up! You have reached Level 5.]
[Available Stat Points: 5]
He read the notification on the move and didn’t open the stat allocation interface. Later.
The group had developed cohesion somewhere in the second level.
Not the organized cohesion of a trained unit — the functional cohesion of people who had been through the same extended crisis and had learned each other’s tendencies through observation. The A-rank students had stopped waiting for explicit instructions and started reading the situation from Yuan’s positioning and Li Meilin’s formation choices. Zhang Wei had three first-years managing the pace of the injured students without being told. Jiang Rui had appointed herself rear guard without discussion, which was the correct instinct and Yuan had no objection to it.
Li Meilin was running lower than she’d been an hour ago. He could read it in the formation spacing, she was positioning the A-rank students to take the initial contact on C-rank threats and reserving her output for priority targets. Her mana economy was as precise as everything else about her and she was still producing results, but the reserves that had made the Gargoyle King fight look effortless were spent.
He thought about the thirty-eight points in his current skills list and said nothing.
The exit corridor was visible at the next junction, the faint grade change in the ambient mana, the proprioceptive map showing the dungeon’s boundary fifty meters ahead, the gate threshold that had been sealed for the last three hours presumably restored by the core stabilization.
Someone in the middle of the formation saw it first and the sound that went through the group was the same held-breath release from the main hall, just more ragged and more real.
Yuan checked the map between them and the exit.
One signature. Stationary. Positioned directly in the exit corridor’s center with the specific immovable quality of something that wasn’t there by accident.
He looked at the size reading his Sense was returning and revised his timeline estimates.
[Ding!]
[Monster Detected: Stone Sentinel]
[Rank: B]
[Note: Positioned at dungeon gate threshold. Territorial anchor behavior.]
The corridor ahead was wide enough that they could see it from the junction — four meters of armored mass, standing in the exit corridor with the settled permanence of something that had identified the gate as its territory and had no intention of renegotiating.
The group stopped.
Jiang Rui said, quietly, from the rear: "Of course."
Li Meilin looked at the Sentinel. Looked at her own MP reserves with the internal assessment of someone who knows exactly what they have and is being honest about whether it’s enough. Looked at Yuan.
He was already reading the Sentinel’s mana structure through True Sight, the B-rank composition resolving in detail, the channel architecture, the joint structure, the anchor point where its territorial behavior was written into its mana system as a fixed behavioral imperative.
One more, he thought. Then we’re out.
He checked his MP. Thirty-one.
"I’ll need thirty seconds," he said to Li Meilin. "Can you give me thirty seconds?"
She looked at him with the focused expression she’d been wearing since the confrontation, the one that said she was still accumulating data, still building her case, still waiting for the moment when the explanation he’d given her would stop being sufficient.
"What are you going to do in thirty seconds?" she said.
Yuan looked at the Stone Sentinel and thought about the word neutralize and how the dungeon had been using it all evening.
"What I’ve been doing all night."