Lin Xian

Biodata

Feature	Information
Name	Lin Xian
Alias(es)	Captain Lin; Brother Lin; Sword Bearer; Mechanist; Mechanical Lord
Species/Race	Human; mechanical ability user
Gender	Male
Affiliation	Infinite Train / Infinite Alliance; cooperative ally of the Phoenix Association
Occupation/Role	Captain of the Infinite; mechanical engineer, manufacturer, and field commander
Status	Alive
First Appearance	Chapter 1

Power Progression

Stage / Realm / Level	Chapter	Notes
Mechanical Heart Lv.1	1	Begins with Mechanical Devour, Manufacturing, Scan, Repair, and Operation; Strength is already Lv.1. 1
Mechanical Devour Lv.2	30	Reaches Lv.2 following the battle with the Giant Insect. 30
Mechanical Heart Lv.2	45	Reached by devouring a 1900KW generator set; gains Decomposition Space, a 100-ton material store that retains 20% of devoured machinery. 45
Mechanical Manufacturing Lv.2	64	Increases manufacturing speed after devouring a freight electric locomotive. 64
Mechanical Devour Lv.3	70	Devouring efficiency rises enough to process an empty freight carriage in under half an hour. 70
Mechanical Heart Lv.3 — Mechanist awakening	175	Gains the Research and Development Center and Manufacturing Plant; Mechanical Devour and Manufacturing are both Lv.3. 175
Mechanical Heart Lv.4	241	The Hell Black Chrysanthemum's converted energy completes the upgrade; Lin Xian gains Mechanical Amplification and upgrades Wind Cannon toward Mech Energy Cannon. 241
Mechanical Manufacturing Lv.4	244	Raises fabrication and blueprint-research efficiency, sharply reducing the research time for the TRP Fourth Generation Powered Exoskeleton Armor. 244
Mechanical Manufacturing Lv.5	280	Achieved through intensive production of armor, robots, radar, and industrial equipment. 280
Secondary Awakening — Black Star Forge	388	Gains Black Star Forge and Transfer Manufacturing, allowing external mechanical objects to be brought into the forge for modification, repair, disassembly, or devouring. 388
Mechanical Heart Lv.6 — Mechanical Lord	419	Recorded with Lv.6 Devour and Manufacturing, amplified combat skills, and the Black Star Forge. 419
Supercritical Diffraction Sword	438	Obtains a legendary constraint-ray skill after devouring a battle-damaged Intrepid-class warship hull. 438
Mechanical Heart Lv.7	496	Reaches Lv.7 through dark-energy conversion from Civilization Rehearsals; gains Power Resonance, which channels a machine's output directly into his body. 496

Background

Before the apocalypse, Lin Xian was a college student who described himself as a skinny shut-in; after his Strength attribute first reached Lv.1, he became capable of nearly one hundred one-handed push-ups. He initially considered his ability unimpressive, but quickly recognized that Mechanical Devour could turn machinery into Mechanical Origin Points, skill proficiency, materials, and attribute growth. 1

He began the Infinite Train Project in Jiang City, using Mechanical Heart to repair and modify a Juying 03E heavy-duty gas-turbine locomotive into a mobile fortress. He scavenged tank-grade steel, fabricated composite armor plates, scanned weapons into blueprints, and personally welded the train's defenses before the polar night intensified. 2

Personality

Lin Xian is pragmatic, observant, and survival-oriented. When Chen Sixuan first asks for refuge, he evaluates the concrete value of her Orbital Ring knowledge and language skills rather than accepting her solely because of their prior teacher-student relationship. 2

He is decisive under pressure, willing to accelerate through an ambush, kill hostile leaders, or dismantle dangerous factions before they threaten the Infinite. His caution extends to alliances: he cooperates when necessary but prepares for betrayal and uses tracking, reconnaissance, and contingency plans to retain the initiative. 18 20 222 322

As the Infinite grows, Lin Xian shifts from a lone-survivor mindset to leadership built on trust, delegation, and long-term protection. He entrusts teammates with dangerous responsibilities, equips them according to their strengths, and increasingly sees the train as a refuge for more than only its strongest members. 65 254 318 393

Abilities & Skills

Mechanical Heart

Lin Xian's core ability governs his interaction with machinery and is the foundation of the Infinite's construction, operation, and continuous upgrades.

• Operates locomotives and systems that ordinary personnel cannot control. 6 121
• Converts non-mechanical dark-side energy into Mechanical Origin Points through the Hell Black Chrysanthemum and heteromorphic cube. 241 266
• Raises his physical Strength, Speed, and Defense alongside his mechanical development. 45 175 242
• Manufacturing and material conversion consume stamina; complex construction can exceed his current capability. 174 242

Mechanical Devour and Decomposition

Mechanical Devour breaks down machinery for Origin Points, proficiency, attributes, materials, and occasionally new skills.

• Large, high-power machines provide substantially greater rewards than household appliances. 1 45 182
• Decomposition Space stores recovered materials for direct use in blueprint-based manufacturing. 45
• Can process locomotives, vehicles, generators, missiles, warship components, and other complex equipment. 64 175 224 438
• Later remote-devouring capability greatly improves his efficiency while operating in dangerous zones. 307

Mechanical Manufacturing and Research

Lin Xian can fabricate equipment from scanned blueprints or improvise mechanical structures from available materials.

• Creates armor plates, barriers, hooks, shields, weapons, surveillance systems, and train infrastructure. 2 63 174
• The Research and Development Center improves existing blueprints, while the Manufacturing Plant converts raw materials into specialized components such as solid propellant. 123 166
• Produces weapons in quantity for trade, leading Hu Lu Shou to describe him as a mobile military factory. 220 244
• Uses Black Star Forge and Transfer Manufacturing to modify or dismantle transferred machinery on a much larger scale. 388

Mechanical Amplification

Mechanical Amplification upgrades max-level skills into more powerful mechanical-exclusive versions.

• Mech Energy Cannon — amplified form of Wind Cannon, used as Lin Xian's principal direct-fire ability. 241 250
• AT Field — amplified defensive field derived from Ice Shield. 276
• Superstring Reactor Phase Rainbow Ring — an amplified high-output system that supports his strongest techniques. 419 462
• Energy Leap — available amplification path for max-level Flashback. 419

Combat Skills

• Flashback — rare high-speed movement and strike skill; first used with the GK03 Electric Saber to wound the White Giant Monster. 50 61
• Electric Surge — rare electrical-generation skill gained by devouring a 110KV capacitor bank; used to manufacture and power the GK03 Electric Saber. 71
• Gravity Lens — legendary gravitational attack gained from a nuclear turbine processor; capable of destroying powerful entities and clearing Dark Marks. 241 461
• Supercritical Diffraction Sword — legendary constraint-ray sword that deals devastating area damage at extreme mental-energy cost. 438 462

Power Resonance

Power Resonance transfers a machine's output directly into Lin Xian's body.

• Can draw on the Firmament Train's 5000-megawatt nuclear core. 496
• Temporarily grants explosive force comparable to Unit 001's massive mechanical arms. 496

Equipment / Weapons / Items

• Infinite Train — Lin Xian's armored survival train and primary mobile fortress; expanded from the original Juying 03E locomotive into a heavily armed, multi-carriage force. 2 175
• Gemini 11R Nuclear-Powered Electric Locomotive — later nuclear-powered locomotive used for propulsion and high-energy train systems. 126 175
• Firmament Train — successor-scale armed train formation; eventually exceeds four kilometers in length. 407
• Black Hawk—Silent Hunter Battle Armor — Lin Xian's custom full-coverage armor, built with upgraded composite materials, magnetic hooks, thrusters, radar, and life-support systems. 319
• GK03 Electric Saber — tungsten-titanium alloy saber powered through Electric Surge. 50 61 71
• G3 Electromagnetic Railgun — heavy railgun system manufactured for the Infinite's weapon stations. 244 311
• 1130 CIWS — close-in weapon system manufactured to protect the train from mass threats. 180
• Thunder Falcon 2000 attack robots — drone units Lin Xian can control in groups; he later operates twenty simultaneously. 315
• Black Star Forge — internal manufacturing space used for automated disassembly, devouring, repair, and mass production. 388

Relationships

• Chen Sixuan — Former university teacher and early survivor aboard the Infinite. Their relationship evolves from a harsh survival alliance into mutual trust and a romantic partnership; she becomes a key logistics commander and combatant. 6 211 287 315
• KIKI — Core partner in scouting, combat, technical work, and command decisions. Their close partnership develops into a romantic relationship during the Scarlet crisis. 50 243 531
• Lou Ye / Da Lou — Trusted frontline ally and mechanical assistant. Lin Xian crafts weapons and custom armor for him, while Da Lou assists with manufacturing, repairs, and close-quarters defense. 65 66 418
• Lou Shasha — Da Lou's younger sister; an early ally whose loyalty earns Lin Xian's trust. She grows into a capable scout and exceptional mecha pilot. 36 44 244
• Ding Junyi — Researcher and scientific adviser who studies disaster plants, dark energy, human evolution, and the relationship between ability users and eerie entities. 213 498
• Lu Xingchen — Fire ability user known as “Brother Huo”; joins the Infinite after losing his vehicle and becomes one of Lin Xian's strongest combatants. 145 312
• Chu Yan — Phoenix Association and NAUF operative connected to Lin Xian through consciousness links. Her shifting allegiance and knowledge of the Foundation make her one of his most consequential allies. 337 388 530
• Ye Lan — Phoenix Association commander who recognizes Lin Xian as a sword bearer and entrusts him with major operations involving humanity's survival. 388 523 530
• Hua Xiaoling — SIID Foundation leader whose interest in Lin Xian's Mechanical Heart repeatedly places her between potential ally, manipulator, and adversary. 221 493 525

Story Role / Major Arcs

• Infinite Train Project — Constructs and arms the Infinite in Jiang City, then rescues Chen Sixuan and establishes the train as a survival fortress. 2 6
• Early Convoy Expansion — Defeats Liu Wei, survives the White Giant Monster, forms temporary alliances, and brings KIKI and the Lou siblings into the group. 20 36 44
• Mechanist Development — Secures military equipment, devours generators and locomotives, and upgrades the Infinite into an increasingly self-sufficient armored train. 45 64 175
• Xilan and the City Forging Plan — Leads and equips the Infinite during the defense and evacuation crisis around Xilan City, while gaining recognition from the Phoenix Association. 277 287
• Star Abyss No. 5 — Helps rescue Silent City, confronts the Crimson World, and turns the Joint Train into a force capable of crossing the Star Abyss. 350 363 371
• Dawn City Operations — Infiltrates Dawn City, opposes the Vanguard Plan, retrieves the Galaxy Heart, and launches the Grey Mist Envoy. 393 402 406
• Sword Bearer Mission — Joins the Phoenix Association's Spark Project, pursuing answers about Nantianmen, the Dark Civilization, and the limits of mechanical power. 418 421
• Scarlet Crisis — Awakens after being trapped in the Black Star Forge, reunites with his surviving forces, and accepts command responsibilities amid the Tower Civilization and Foundation's escalating threats. 514 523 531 540

Notable Quotes

“I didn't raid an arsenal because I am the arsenal.” 244

“Integrate all of humanity's technology, including Silent City, Dawn City, the Phoenix Association, Xinghua Heavy Industry, the Star Army, and then... Explore!” 371