Xu Linjiu

Biodata

Feature	Details
Name	Xu Linjiu (徐林九) 1
Alias(es)	Teacher Xu; “Uncle” (used by Xiao Wu) 2 12
Species/Race	Human; transmigrator 1 34
Gender	Male
Affiliation	Notting Junior Academy
Occupation/Role	Soul Master; teacher and mentor to Notting Academy’s work-study students 1 3
Martial Soul(s)	Pokédex; Glastrier (detached second martial soul) 5 24
First Appearance	Chapter 1

Power Progression

Stage / Realm / Level	Chapter	Notes
Four-ring Soul Ancestor	4	Earliest documented realm; Tang Hao identifies him as a Soul Ancestor in his early twenties. 4
Lv. 46 Soul Ancestor	6	His Pokédex panel lists him as a Psychic-type at Lv. 46, with eleven known moves. 6
Soul power increased by one level	14	His cultivation rises during three months of training Tang San and Xiao Wu. 14
Lv. 50 Soul King	16	Skydream Iceworm transfers its power to him after reaching level 100, allowing Xu Linjiu to obtain a million-year fifth soul ring. 16
Lv. 53 Soul King	17	Following the tribulation, his soul power rises by three additional levels; his Pokédex gains the Protean ability. 17

Background / History

Xu Linjiu was an orphan taken in by the dean of Notting Academy. After transmigrating to Douluo Continent, he spent more than ten years researching and developing the capabilities of his Pokédex martial soul. 1 6 20

Before taking disciples, Xu Linjiu spent half a year searching the Star Dou Great Forest for Skydream Iceworm. The iceworm became his first true contract partner, predating his contract with Tang San. 15

As a newly recruited Notting Academy teacher, Xu Linjiu intervened when Yu Xiaogang attempted to recruit Tang San. He publicly dismantled Yu Xiaogang’s martial-soul theories, used a Miracle Seed to demonstrate Tang San’s Blue Silver Grass was not ordinary, and accepted Tang San as his disciple. 1 2 3

Tang Hao later tested Xu Linjiu’s ability and judgment. Satisfied with his performance, Tang Hao entrusted Tang San’s future to him and asked him to conceal the Clear Sky Hammer unless necessary. 4

Appearance

Xu Linjiu is a tall, straight-backed young man in his twenties with handsome features and an elegant bearing. He commonly wears flowing robes. 1

• Tall and upright posture. 1
• Handsome, refined appearance. 1 28
• Usually composed, even when confronting stronger Soul Masters. 4 28

Personality

Xu Linjiu is sharp-tongued and openly contemptuous of Yu Xiaogang’s theories, particularly where they endanger talented children. He is willing to humiliate opponents who act arrogantly, but he also recognizes the consequences of provoking powerful factions and avoids killing Yu Xiaogang despite having the opportunity. 1 3 11

As a teacher, he is demanding but attentive. He provides Tang San with bedding, training, resources, and practical advice on concealing trump cards. His methods emphasize physical conditioning, real combat, martial-soul development, and survival over conventional theory. 3 12 14

He is strategic rather than reckless, favoring stealth, preparation, battlefield control, and decisive force. This is shown in his infiltration of the Blue Lightning Tyrant Dragon Clan and his reluctance to directly assault a defended compound. 21

Abilities & Skills

Pokédex Martial Soul

Xu Linjiu’s primary martial soul is the Pokédex, a spiritual-type martial soul and system interface that records information, grants skills, manages contracts, and displays combat data. 4 5 17

• Forms permanent contracts with Soul Masters and soul beasts; contracted partners live and die together and cannot break the bond. 5
• Raises a permanent contractor’s cultivation speed by ten percent, with the bonus increasing as Xu Linjiu forms more contracts. 5
• Can grant compatible special skills without relying on soul rings. 5 6
• Improves a contractor’s martial-soul essence and may enable evolution as their soul power rises. 5
• Supports temporary contracts, which can be canceled and allow up to three skill impartations. Xu Linjiu created this derivative application himself. 6

Psychic Power

Xu Linjiu’s base attribute is Psychic. His spiritual power allows him to sense, restrain, control, and interfere with targets. 6 17

• Identified Tang Hao’s presence through spiritual observation. 4
• Restrained Xiao Wu when she attempted to flee after her identity was exposed. 34
• Controlled Luo Sanpao with Psychic before severing its bond with Yu Xiaogang. 28
• Uses Hypnosis to incapacitate guards during infiltration. 21
• Uses Psychic Detection to create a three-dimensional map of his surroundings through the Pokédex. 17 21
• His Psychic Detection has a maximum range of one thousand meters at Lv. 53. 17
• Psychic Sharing transmits the Pokédex’s detected images directly to allies’ minds. 17

Protean

Protean is an ability gained after Xu Linjiu’s fifth soul ring and Pokédex evolution. It changes his attribute according to the move he uses. 17

• Using Ice Beam temporarily makes him an Ice type, improving ice-element offense and granting Ice-type resistances. 17
• Using Rain Dance temporarily makes him a Water type. 17
• Using Shadow Ball temporarily makes him a Ghost type, helping conceal his aura during stealth operations. 21
• Lets him adapt his offense and resistances to avoid unfavorable elemental matchups. 17

Domain and Battlefield Control

Xu Linjiu possesses several area-control techniques suited to training, defense, and large-scale combat.

• Gravity — Manipulates gravity; he uses it to impose double-gravity endurance training and to counter Zhao Wuji’s gravity field. 12 31
• Misty Terrain — Creates pale-pink mist that suppresses abnormal conditions and eases the strain on those within its range. 4 12
• Rain Dance — Summons rainfall that strengthens Water-type moves and weakens Fire-type moves. 6
• Light Screen and Reflect — Defensive barriers used to reduce pressure in the icy spring and shield against falling icicles. 22 25
• Substitute, Calm Mind, and Hypnosis — Additional recorded techniques available through the Pokédex. 6 17

Million-Year Fifth Soul Ring

Xu Linjiu’s fifth soul ring originates from Skydream Iceworm’s breakthrough and transfer of power. It is platinum-white in appearance, though he disguises it as black in public. 16 28

• Grants Psychic Detection and Psychic Sharing. 17
• Grants Psychic Seal, one of the three usable skills from the ring; one potential skill slot is permanently occupied by the Pokédex’s contract function. 17
• Increased his soul power by thirty percent upon entering the Soul King realm and substantially improved his spiritual power. 17

Glastrier and Second Martial Soul

Glastrier is a Legendary Ice-type Pokémon hatched from an egg nourished by the Ten-Thousand-Year Ice Cave. Xu Linjiu captured it with a Luxury Ball, raised it with Exp. Candy, and fused with it as his detached second martial soul. 23 24

• Glastrier manifests through an icy-blue mark on the back of Xu Linjiu’s left hand. 24
• Has a separate system panel from Xu Linjiu despite being his second martial soul. 24
• Its known moves include Tackle, Tail Whip, Double Kick, Avalanche, Stomp, and Taunt. 24
• Its ability is Chilling Neigh. 24
• Xu Linjiu can use Ice Beam through Glastrier’s power, capable of injuring Soul Sages and freezing opponents. 24 26

Bond Bridle: Man and Horse as One

Using the Bond Bridle system item, Xu Linjiu can merge with Glastrier and combine their capabilities. 26

• Changes his ability to Man and Horse as One, granting all abilities possessed by both Xu Linjiu and Glastrier. 26
• Grants Snow Spear, an ice technique that froze and pierced Soul Sage Yu Yuanlie. 26
• Allows Xu Linjiu and Glastrier to fight with fully unified aura and coordination. 26

Rainy-Day Water Meteor Shower

Xu Linjiu developed a high-output combination tactic using Rain Dance, Weather Ball, Protean, and Water-type enhancements. 31

• Weather Ball changes type and power depending on the weather. 31
• Under Rain Dance, Weather Ball becomes Water type. 31
• Protean, Water-type affinity, Adaptability, and rain collectively raise each Weather Ball’s power to over three times its base strength. 31
• He used the tactic to overwhelm Soul Sage Zhao Wuji. 31

Martial-Soul Bond Manipulation

Xu Linjiu’s research into detached martial souls and contracts allows him to locate and alter the connection between a master and a detached martial soul. 28

• Severed Yu Xiaogang’s connection to Luo Sanpao while leaving Yu Xiaogang’s soul rings behind. 28
• Freed Luo Sanpao as an independent ordinary soul beast and later gave it to Xiao Wu. 28 30
• Attempted to destroy Ma Hongjun’s Evil Fire Phoenix martial soul; the process instead evolved it into an Ice Phoenix. 29

Equipment / Weapons / Items

• Pokédex — Primary martial soul, contract medium, system interface, and detection tool. 5 17
• Storage soul tool — Used to carry bedding, medicine, training supplies, and other resources. 3 12
• Skydream Iceworm’s shed skin — Tough, light protective material that shields him from the extreme cold of the Ten-Thousand-Year Ice Cave. 19 22
• Luxury Ball — Used to capture Glastrier. 23
• Exp. Candy — Used to restore or raise the levels of Skydream Iceworm and Glastrier. 15 23
• Potion and Healing Medicine — System medicines used to restore stamina, mental strength, or injuries. 12 14
• Whale glue — Refined into a golden liquid to improve physical constitution and support cultivation. 12 13

Relationships

• Tang San — Disciple and first human permanent contractor. Xu Linjiu recognizes Tang San’s potential, guides his martial-soul evolution, teaches him survival and combat principles, and receives Tang Hao’s trust as Tang San’s mentor. 2 3 4 5
• Xiao Wu — Student and later permanent contractor. Xu Linjiu conceals her soul-beast aura, protects her after learning her identity, and offers a contract to secure her safety and accelerate her growth. 11 34
• Skydream Iceworm — First true contract partner. Their relationship is playful but deeply trusting; Skydream’s breakthrough grants Xu Linjiu his fifth soul ring and Soul King advancement. 15 16 17
• Glastrier — Legendary Pokémon partner and detached second martial soul. Glastrier was born from Xu Linjiu’s Ice Gift mission and later fused with him. 23 24
• Tang Hao — Tang San’s father. After testing Xu Linjiu, Tang Hao entrusts Tang San’s future to him. 4
• Yu Xiaogang — Primary adversary. Xu Linjiu repeatedly exposes Yu Xiaogang’s flawed theories and eventually severs his connection to Luo Sanpao. 1 10 28
• Dean Su — Notting Academy’s dean and Xu Linjiu’s adoptive guardian. The dean supports Xu Linjiu’s growth but warns him about Yu Xiaogang’s political connections. 20 33
• Wang Sheng — Student under a temporary contract. Xu Linjiu helped him create a self-created soul skill despite his ordinary talent. 3 6
• Little Qing — An eight-hundred-year Azure-Scaled Horse under a temporary contract; serves as Xu Linjiu’s transport and training companion. 6 12

Story Role / Major Arcs

Recruitment of Tang San

Xu Linjiu interrupts Yu Xiaogang’s attempt to claim Tang San as a disciple, refutes the Grandmaster’s theory of “useless” Blue Silver Grass, and proves Tang San’s martial soul has the potential to become a Blue Silver King or Blue Silver Emperor. Tang San subsequently becomes Xu Linjiu’s disciple and permanent contractor. 1 2 5

Hunting Soul Forest and Tang San’s Evolution

Xu Linjiu takes Tang San to Hunting Soul Forest, teaches him Mega Drain and Iron Defense, and guides him in absorbing the Evergreen Tree’s soul ring, life core, and Miracle Seed. Tang San’s martial soul evolves into Blue Scale Silver Pattern Grass and gains Blue Silver Evergreen and Seed Bomb. 6 7 8

Notting Academy Training

Xu Linjiu trains Tang San and Xiao Wu through gravity-assisted endurance runs, whale-glue refinement, and nightly sparring. He prioritizes practical experience and teaches Tang San to rely on his martial soul rather than only hidden weapons and external techniques. 12 13 14

Skydream Iceworm’s Breakthrough

After prioritizing Skydream Iceworm’s growth with Never-Melt Ice, Xu Linjiu faces the iceworm’s lightning tribulation. Skydream reaches level 100 and transfers its power to Xu Linjiu, allowing him to become a Soul King with a million-year fifth soul ring. 15 16 17

Ten-Thousand-Year Ice Cave Expedition

Xu Linjiu infiltrates the Blue Lightning Tyrant Dragon Clan using Psychic Detection, Ghost-type transformation, and Hypnosis. He enters the Ten-Thousand-Year Ice Cave, completes the Ice Gift mission, hatches Glastrier, and accepts it as his second martial soul. 21 22 23 24

Blue Lightning Tyrant Dragon Clan Ambush

Ambushed by Soul Sages Yu Yuanlie and Yu Yuangang, Xu Linjiu fights alongside Glastrier. He activates Bond Bridle, merges their abilities, learns Snow Spear, and kills Yu Yuanlie. 26

Shrek Academy Conflict

Xu Linjiu arrives when Tang San is being targeted by Yu Xiaogang and Shrek Academy. He freezes Flender, defeats Zhao Wuji with Rainy-Day Water Meteor Shower, severs Yu Xiaogang’s connection to Luo Sanpao, and forces Shrek Academy to provide financial and material compensation. 28 31 32 33

Xiao Wu’s Contract

After revealing that he knows Xiao Wu is a transformed hundred-thousand-year soul beast, Xu Linjiu explains that he had concealed her aura from Tang Hao. He offers her a permanent contract that seals her aura, improves her cultivation, and grants special skills; Xiao Wu accepts. 34