The "Survival on the Train" game has bugs, it's really laggy!

Wang Hu knelt on the outside of the 005 emplacement.

His ear was pressed against the borosilicate plate, his left hand's fingers braced on the bottom of the cargo compartment, and his right hand rested half an inch above the seal of the second cargo compartment on the right. The knocking sound from inside the container came from deep within the metal, passing through the lead sheet, through the borosilicate layer, through the sealant coating, and striking his ear.

Three short, two long. Pause. Three short, two long. Pause. Three short, two long.

Seventeen seconds. Three cycles. The length of each interval is exactly the same as the swing time of the remaining spring of the countdown timer on the 009 hanger.

Wang Hu turned to look at Su Yuan.

His lips moved slightly, his voice held back, as if afraid the thing inside the box would hear: "It's her knocking. The rhythm is the same. The force is the same."

Su Yuan stood in front of the driver's side door, silent. His right hand rested on the door frame, his knuckles slightly bent, his gaze fixed on the black seal on the second cargo compartment on the right of the 005 hull. The condensate on the edge of the seal was still there; when the cold white light of the overhead lamp shone on it, the surface of the condensate droplets trembled slightly, in sync with the tapping inside the compartment.

Inside cabin 013, Qin Yan's metal plate remained silent. He leaned against the stretcher, his right hand gripping the metal plate, the veins on the back of his hand bulging, but he didn't strike.

There was a four-second silence.

A sound came from the direction of station 57.

The broadcast voiceprint has switched. It's no longer the system female voice from Station 56, but the standard questioning voice used by old Blue Star flight attendants during shift changes—moderate speaking speed, rising intonation at the end of each sentence, and a slight mechanical bounce at the end of each sentence—a voice that all Blue Star flight attendants heard thousands of times fourteen years ago.

Three warm yellow lights on the ceiling of the four-meter-high platform flickered out simultaneously. The darkness lasted less than a second before the lights came back on.

Eight miniature identification sensors popped out from the edge of the platform's boarding and alighting steps. Each sensor was no more than two centimeters in diameter, with a matte black surface, and its lens was aimed at the seal of the second cargo compartment on the right side of compartment 005. Eight red aiming dots landed on the seal, arranged in an arc.

"Key signal detected for crew 011," the announcement said. "Please open the cargo compartment seal and verify the integrity of the key. Once verified, car 001 may enter the station independently."

The young survivor stood up from the side of the 005 pod. He was still clutching the borosilicate plate in his hand, its surface sealed with tape, three of the eight red aiming dots landing on it. He didn't let go, his arm taut, his shoulder slightly leaning forward.

Tang Lan leaned halfway out of the 013 cabin door, her left hand resting on the release hook cover. She didn't speak, but she didn't move her hand away.

The small torch probe scans the frequency and analyzes the data on the screen.

The main screen refreshed. The focal length data of the eight probes were arranged in a row, all focused on a point three centimeters below the black seal on the second compartment from the right. Not the seal itself—but below the seal.

"A shielding layer," Xiao Huo said. "There's a lead shielding layer three centimeters below the seal. Embedded inside the shielding layer is a miniature mechanical transponder, operating at the same frequency as Ji Yun's countdown timer. The transponder is striking the inner wall of the storage compartment with three short and two long beats."

Qin Yan's iron sheet finally came crashing down.

The sound of the metal armrest striking the metal was extremely heavy, sounding more like slamming a table than typing. The blows came in rapid, intermittent bursts, sparks flying from the edges of the metal.

"The probe doesn't just scan the key," Tang Lan translated. Qin Yan typed too fast, and Tang Lan could only keep up with one word every two beats. "It also scans... the activity of the condensate at the moment the seal is opened."

She paused for a moment.

"Living metal will adhere to the key the moment the box is opened."

Wang Hu withdrew his hand from above the seal. He knelt on the outside of the cabin, his knees digging into the rails, looking up at the eight red aiming points. The red light shone on the seal's surface, making the black condensate gleam with a dark, oily sheen.

"No," Su Yuan said.

He turned and walked back to the driver's cab, pulling out the live metal cryogenic suppressor from the direction of shelf 012. The one seized at Station 56 still had frost remaining on its nozzle from the last use. He handed the suppressor to Wang Hu.

Wang Hu took it and aimed the nozzle at the outer wall of the second cargo compartment on the right. He pressed the trigger, and the liquid nitrogen mixture was sprayed out. White mist enveloped the surface of the seal and the surrounding 20-centimeter-wide protective wall, the temperature dropped sharply, and the condensate solidified into black ice crystals.

The knocking inside the box stopped.

One second. Two seconds.

A new beat began. The rhythm had changed.

It's not three short and two long. It's two short and one long.

Two short and one long.

Wang Hu turned to look at Su Yuan.

Su Yuan didn't explain. Everyone understood the meaning of the two short lines and one long line—refusal. The contents of the box were refused to be opened.

The broadcast voiceprint immediately adjusted. The tone changed from inquiry to command, the rising intonation at the end of the syllable was removed, and the interval between each word was shortened to 0.05 seconds.

"Key signal located. If the seal is not opened for verification within thirty seconds, Station 57 will determine Group 001 as having committed identity fraud. Activate the directional sonar in the Scrap Sea. Awaken all remaining living metal nodes from the 011 wreckage."

Inside compartment 013, the wristbands of two frostbite victims vibrated simultaneously. The sensors flashed yellow, and their heart rates jumped from 85 to 103. One of them gripped the edge of the stretcher, his knuckles turning white.

Tang Lan pressed the brake lever down one notch.

"Countdown," Little Fire said, "Twenty-eight seconds."

Su Yuan pressed the communication button. "Xiao Si, probe in through the gap in the side pillar of Station 57. Towards the waste sea."

The fourth scout vehicle popped out from under the 012 protective shell, its wheels skidding along the ground, and squeezed into the gap of less than fifteen centimeters between the side pillar and the wall of platform 57. The scene then switched to the auxiliary screen.

Inside the crevice was the old Blue Star standard maintenance passage, which led to a downward slope at the end, with a sea of ​​waste at the bottom.

When the footage came back, no one in the driver's cab spoke.

Deep water. The wreckage of carriage 011 lies scattered on the seabed. The outer walls of the carriage are covered with dark silver nodes—not just a few, not just a few dozen—but a whole cluster. The red-marked numbers jump to four digits and continue to rise. Little Fire gives the final reading: over five thousand three hundred. Dormant node. After being awakened by the sonar, it will spread outwards using the wreckage of 011 as a relay station.

"Nineteen seconds," Xiao Huo said.

The four-meter-high platform at Station 57 began to vibrate. It wasn't caused by impact—it was due to mechanical movement. Cracks appeared in the ground, extending from the four corners of the platform towards the center, and transparent verification bulkheads rose from the cracks. The bulkheads were made of reinforced glass, over three centimeters thick, with copper wiring channels embedded along their edges.

The enclosure of the four sides of the cabin is extremely large, encompassing not only Platform 57, but also the 005 embankment, Su Yuan's pilot's seat, the 013 casualty compartment, and the external furnace body of the refining furnace.

"They're going to lock us up for testing." Wang Hu got up from the ground, still holding the suppressor in his hand.

"Fourteen seconds."

The bulkhead rose to a height of one meter and was still rising. A weak current pulsed within the copper conductor groove, the frequency of which was similar to the power supply pulse of the arc sterilization rack at Station 56.

Su Yuan didn't look at the bulkhead. He stared at the recognition data from the eight probes on the auxiliary screen.

The small fire detected the anomaly 0.3 seconds before the verification chamber was started.

"The probe array identifies the vulnerability," Xiao Huo said in a very low voice. "The eight probes only scan the mechanical coder signal below the seal of the second compartment from the right—they don't scan the carbon fiber texture of the seal itself."

Su Yuan's hand was already on the real brain access panel.

"The real brain," he said. "Connecting to the neural transmission core."

The 001 downgraded backup traction brain, recovered from Station 52, hummed softly in the cryogenic preservation chamber. The neural conduction interface lit up green, and the Zhenshan core parallel channel opened.

Output Ji Yun's old crew number, 126 digits long (011). Heartbeat rhythm format.

Within the true brain's storage chip, the 144-bit complex code written into the primary memory layer fourteen years ago began to decode. The first 126 bits—the old crew number 011—were converted into heartbeat pulses. Each digit corresponded to one heartbeat interval. The pulses flowed from the true brain into the mountain-suppressing core, where the core amplified the signal and channeled it underground through the dark gold conduit of the refining furnace.

The signal travels through the rails, through the paving stones, through a three-meter layer of soil, and reaches the dormant layer of the living metal.

It's not activation—it's simulation.

It simulates a verification signal that "the seal has been opened and the key has been taken out".

The 126 numbers cycled repeatedly underground in a heartbeat rhythm, the frequency of which perfectly matched the tapping inside isolation box 005.

The red aiming points of the eight probes flashed simultaneously.

It flashed three times.

The indicator light changes from red to green.

The verification bulkhead stopped rising. It got stuck at 1.2 meters, and fine cracks appeared on the edge indicating it was about to be unlocked. The current in the copper wire channel disappeared.

"Nine seconds," Little Fire said.

The broadcast stopped.

There was a two-second silence. It wasn't a system delay—it was processing time. Two seconds later, the broadcast restarted, and the voiceprint switched back to the original voice of the flight attendant during shift handover. The speech was slower, the pronunciation became unclear, and there was subtle data comparison noise at the underlying level.

Then the broadcaster refused.

"Verification signal incomplete." The voiceprint detection result popped up on the auxiliary screen. Simultaneous translation: "The verification signal lacks the live metal repulsion frequency band characteristic of the condensate in the second right compartment. The system determines it to be an analog signal. Verification failed."

The verification bulkhead resumed its ascent. The crack closed, and the copper wiring channels were re-energized.

"Activate the second layer of identity lock," the announcement said. The voiceprint returned to normal speaking speed, each word becoming clear again. "We request the driver of train 001 to provide a complete audio recording of the last words spoken by the train conductor before locking the carriage on the day the 011 crew members died in the line of duty."

A set of equipment descended from the ceiling. It was a standard recording and acquisition enclosure from the old Blue Star system, with a metal mesh surface and shock-absorbing rubber pads around the edges. The acquisition port was aimed at Su Yuan's driver's seat. The acquisition enclosure was less than thirty centimeters above his head.

Inside cabin 013, Qin Yan's metal plate stopped moving. He remained frozen on the stretcher, his right hand still gripping the metal plate, but his fingers were no longer moving.

Tang Lan turned to look at him.

Qin Yan's lips moved. No sound came out. The shape of her lips conveyed one word: nothing.

No one has the audio recording of the 011 train commander's last words. It happened twenty years ago. All six crew members perished; the train car sank into a sea of ​​rubble. There was no black box transmission, no backup recording, nothing—

Wang Hu has already walked towards the 009 commemorative hanging rack.

His hand reached for Ji Yun's countdown timer. The timer was stopped at seventeen seconds, its copper casing blackened by oxidation, and its spring hadn't been wound for fourteen years.

Su Yuan looked at him.

Wang Hu removed the countdown timer from the rack. He flipped it over and pressed his thumb against the winding knob.

Counterclockwise.

The spring rewinds. The gears mesh inside the copper casing, making a very faint clicking sound. The seventeen-second mark moves backward—sixteen, fifteen, fourteen—the spring winds up tighter and tighter, and the resistance to turning the knob increases.

Wang Hu's thumb left a white mark.

The moment the clockwork returned to zero, something popped out from inside the countdown timer. An extremely thin copper sheet, half a millimeter thick, slid out from a hidden groove at the bottom of the clockwork chamber and landed in Wang Hu's palm.

The copper sheet has extremely dense grooves on its surface. It's not engraving—it's recording. It's an old Blue Star standard mechanical recording disc, using the same technology as the No. 52 Station's true brain storage chip.

Wang Hu handed the copper piece to Su Yuan.

Su Yuan didn't answer. He pointed to the real brain reading slot.

The copper sheet slides into the reading slot.

The brain processed the signal in 1.7 seconds. A waveform appeared on the main screen—not a speech waveform, but a heartbeat.

Six sets of heartbeats.

Different frequencies, different amplitudes, but perfectly synchronized beats. The hearts of six people beat at the same instant, with overlapping heartbeat intervals.

Before the train conductor locked the carriage, six crew members placed their fingers on the coupling. The metal conductor transmitted the heartbeat vibrations, and the six heart rates were combined into a string of codes—a 126-bit number with the last 18 bits as a check digit.

It wasn't just a sentence. It was a heartbeat.

The knocking sound inside isolation box number 005 started again.

Three short and two long.

The beat and the combined heartbeats of the six people on the copper recording were perfectly synchronized.

Fully synchronized.

The metal mesh of the recording acquisition hood vibrated slightly. It wasn't picking up sound—it was receiving it. The heartbeat signal was output from the real brain's readout slot and transmitted to the acquisition hood via the driver's cab speaker. Six sets of heartbeat waveforms were fed into the verification system at station 57.

The three warm yellow lights on the platform ceiling simultaneously switched to cold white.

The ballast inside the lamp tube emits a sharp, high-frequency whistling sound for two seconds, after which the lamp tube stabilizes into a cool white light.

All eight probes retracted simultaneously. It wasn't a retraction of the pedals—it was a direct power failure that caused them to fall. The probes fell from the edge of the pedals, bounced twice on the rail surface, and the lenses shattered.

The test showed that the bulkhead had broken apart.

It wasn't a complete shattering—it broke off at the point of unlocking the crack. All four bulkheads separated simultaneously from the crack, the upper half falling outwards and the lower half retracting into the gap. Shards of reinforced glass landed on the tracks, making a creaking sound when stepped on.

In the center of the platform floor, a two-meter square metal plate sank downwards. Below the metal plate was a passageway.

Manual verification channel.

The passageway was sixty centimeters wide, just enough for one person to pass sideways. The walls were finished with standard old-style concrete, and emergency lighting strips were embedded in the ceiling, emitting a warm yellow glow. The entrance gate was made of bronze, with three bronze plaques inlaid on each side. Six bronze plaques. Six names.

Crew 011. Six people.

The broadcast voiceprint switched again.

It's not the system audio. It's not the flight attendant's shift change audio. It's a cassette tape. The tape has extremely high background noise, and there's a low-frequency equipment hum in the background.

Ji Yun's voice.

"Identity confirmed."

Her voice was soft, and she spoke slowly. There were breathy pauses between each word.

"Commander, before the entire 011 crew perished, they sealed the key into container number 005, which is considered a prohibited item."

There was a pause. The static from the tape drowned out a breath.

"The key is not an object—it's a heartbeat. You brought them here with you."

The six bronze plaques light up green in sequence. Starting with the first plaque in the top left corner, each plaque lights up every 0.5 seconds. The green light shines through the lettering on the plaques, illuminating the six names.

The gate opened inwards. The copper doors slid open to both sides, pushing out fourteen years' worth of accumulated dust from the tracks.

Base 04 control room.

All channels are silent.

No one pressed the communication button. No one typed. The technician's hand hovered above the keyboard, fingers dangling in the air. The old engineer stood up, his chair sliding half a meter back and bumping into the wall. He took his glasses off his nose, clutching them in his palm, the temples peeking out from between his fingers.

Lu Mingyuan took the communicator off his ear and placed it on the table. It fell with a thud. He didn't pick it up or put it back on.

The silence lasted for six seconds.

Inside cabin 013, Qin Yan tapped the metal plate very slowly. Just once. So lightly it was almost inaudible.

Su Yuan did not allow anyone to enter the manual verification channel.

He stood at the doorway of the driver's cab, looking at the sixty-centimeter-wide gate. Warm yellow lights shone on the concrete walls inside the gate, making it look clean, safe, and welcoming.

He turned around.

"Refining furnace."

The mobile refining furnace unfolds from the side panel of the Devourer. The furnace opening is aligned with the empty space on the left side of the cockpit, and dark gold conduits extend from below the furnace opening.

Su Yuan removed the countdown timer casing from the 009 rack and the copper recording chip from the brain reading slot. He then took the condensate scraper from the suppressor nozzle from Wang Hu's hand—a sample of black condensate that had seeped out and solidified from the seal of the second right compartment of 005.

The three items were placed into the analysis chamber of the refining furnace.

The furnace chamber is heated. Alloy data is displayed on the screen. The copper recording is copied to a new carrier, the metal composition of the countdown timer's copper casing is recorded, and the frequency characteristics of the condensate sample are scanned and archived.

The refining furnace produced two finished products.

The first item: Flight attendant identity heartbeat replication module. It has a copper casing and an embedded mechanical encoder that can continuously output the combined heartbeat code of the six members of the 011 flight crew.

The second item: a live metal heartbeat frequency jammer. Utilizing the repulsion frequency characteristics of the 005 condensate sample, it creates an instantaneous inactivation field for live metal within a one-meter radius.

Lu Mingyuan picked up the communicator again.

"Station 57 rules approved." His voice regained its composure, each word clearly enunciated. "Cruise verification complete for crew 011. Containment verification for container 005 is heartbeat matching. Never open the container."

No reply was received across all channels. No reply is needed.

Wang Hu walked to the manual verification gate. He didn't go in. He squatted down and peered inside the gate.

On the right side of the inner wall of the gate, 30 centimeters above the ground, hangs an iron plaque.

Wang Hu took the iron plate off.

Front. Old Blue Star standard font, outlined in white paint. "Station 58 - Great Wall Defense Line Main Gate - Key Transfer Station."

He flipped it over to the back.

Ji Yun's engraving marks. The handwriting is consistent with all 009 steel plates.

"Number 58 doesn't check your identity. It checks whether you have the courage to hand over the key."

Wang Hu stood up, holding the iron plaque, and turned to face the 005 emplacement.

The last set of knocks came from inside isolation box number 005.

Two short and one long.

Stopped.

receive.

Wang Hu handed the metal plate to Su Yuan. Su Yuan didn't look at the front, only glanced at the line of text on the back for three seconds, and then inserted the metal plate into the mounting slot in the driver's cab.

The headlights of the Devourer shone towards the rear of Station 57. The track behind the station extended for four hundred meters, ending at Station 58.

The sound of gates opening came from the direction of Station 58. A low-frequency rumble traveled up from the track surface, causing the quartz sand on the 012 protective shell to bounce.

But the sound is not one.

There are two paths.

Two paths, one above and one below.

The small torch scan switches to the main screen.

The main gate of Station 58 has two layers. The upper gate is one-third open, with warm yellow lights and the old Blue Star standard welcome broadcast inside. The lower gate is closed—a three-meter-thick blast door, with the highest combat readiness insignia of the old Blue Star Expeditionary Force engraved on the door frame: red background with a black frame and two intersecting diagonal bars inside.

Su Yuan had only seen this identifier once before in the old terminal database. The Pangu Project.

The scout vehicle intercepted a mechanical code in front of the lower-level door.

The code signal is outdated, using the 011 vehicle log format from twenty years ago. The small fire engine took 0.8 seconds to decode.

The text scrolls onto the main screen.

"Those who have kept the key, please go downstairs."

"The lower passage doesn't end at the inner ring of the Great Wall. It's the true starting point of the Pangu Project."

"All the lead cars that handed over their keys went to the upper level—which had been abandoned fourteen years ago."

There was no name at the end. Only a number: 011, the train conductor's employee number.

Su Yuan stared at the line of text on the screen.

His right hand rested on the dashboard, his fingers motionless. At direction 005, the second cargo compartment from the right was silent. The condensate had reformed from ice crystals back into liquid, slowly trickling down the edge of the seal.

On the lower explosion-proof door frame, the red paint of the highest combat readiness indicator reflected a dark red under the headlights of the reconnaissance vehicle. The three-meter-thick door remained completely still, and what peeked through the cracks wasn't light—but a very faint movement of air. Behind the door was space, a passageway, and something was in motion.

The small torch pulls the signal attenuation curve of the mechanical code transmitter onto the secondary screen. The transmitter's battery has 3% remaining. It was charged 20 years ago. The signal strength decreases by 4.7% per year.

Based on the decay rate, this code will disappear completely in eight months.

No one will ever hear the last words of Captain 011.

Wang Hu tapped the 012 hull with the wrench in his hand. The metallic clanging sound traveled along the train, reaching the 005 tail anchor, and disappeared into the darkness at the end of the track.