Yu Xiaogang

Biodata

Feature	Details
Name	Yu Xiaogang (玉小刚)
Alias(es)	Master; “Grandmaster”
Gender	Male
Occupation/Role	Martial soul theorist; Tang San’s teacher; Shrek Academy recruiter
Affiliation	Shrek Academy; formerly Notting Academy 103 110
Status	Alive; expelled from Notting Academy; permanently castrated following his confrontation with the Golden Dragon Emperor 2 7 111 112
First Appearance	Chapter 1

Power Progression

Stage	Chapter(s)	Details
Two-Ring Soul Master	13	Summoned the mutated martial soul Luo Sanpao alongside two century-level soul rings. 13
Severely Incapacitated	111–112	After being paralyzed by the Golden Dragon Emperor’s dragon might, Yu Xiaogang was wounded in the lower body by the Golden Dragon Spear while Flender attempted to flee with him. He survived, but the injury left him permanently castrated. 111 112

Background / History

Yu Xiaogang was present at Notting Academy during Lu Xiao’s martial-soul awakening. Although Lu Xiao displayed innate full soul power, Yu Xiaogang declared his Body Martial Soul “useless” and offered to accept him as a disciple as an exception. Lu Xiao rejected him and criticized his theories, but Yu Xiaogang remained convinced that Lu Xiao simply could not accept having a “trash” martial soul. 1

Du Busi confronted Yu Xiaogang over his judgment of the Body Martial Soul. Overwhelmed by Du Busi’s pressure, Yu Xiaogang wet himself in fear; Du Busi then struck him away, shattering his jaw and leaving him badly injured. The Dean expelled him from Notting Academy for offending Du Busi, giving him three days to move out. Yu Xiaogang nevertheless continued insisting that his soul-ring theory could not be wrong. 2

At his lowest point outside the academy, Yu Xiaogang intervened when a gatekeeper accused Old Jack and Tang San of forging Tang San’s Spirit Hall certificate. Recognizing the implications of Tang San’s innate full soul power and Blue Silver Grass martial soul, he deduced that Tang San possessed a second martial soul and saw him as an opportunity to prove his work. 7

Yu Xiaogang took Tang San to a dilapidated storage room near the academy and explained his deduction. He cited an investigation of 647 Blue Silver Grass martial-soul possessors, arguing that Tang San’s innate full soul power required a second, high-quality martial soul. Tang San accepted him as his teacher after Yu Xiaogang promised to push Blue Silver Grass to its limits, even toward Title Douluo. 8

In the Soul Hunting Forest, Yu Xiaogang guided Tang San toward a Lone Bamboo he believed to be at least four hundred years old based on its height. The bamboo was actually a mutated ninety-nine-year soul beast, making Tang San’s resulting soul ring a pseudo-hundred-year ring. Yu Xiaogang did not verify its age with soul power, relying instead on his own theory. 13 15

Following Tang San’s public humiliation and expulsion from Notting Academy, Yu Xiaogang reaffirmed his commitment to his disciple. He promised to find a way for Tang San to overcome the restrictions of twin martial souls and become an eighteen-spirit-ring Title Douluo. 22

After Tang San’s expulsion, Yu Xiaogang brought him to Shrek Academy, where Flender accepted Tang San despite the stigma of his pseudo-hundred-year ring. 103

Years later, Yu Xiaogang accompanied Flender in attempting to recruit the Golden Dragon Emperor and his companions into Shrek Academy. He introduced himself as the creator of the Ten Core Competencies of Martial Soul theory and attempted to entice the dragon-type martial-soul wielder with the Blue Lightning Tyrant Dragon Clan’s dragonification methods. He did not realize that the masked Golden Dragon Emperor was Lu Xiao, the child who had rejected him at Notting Academy. 110

When Lu Xiao released his Golden Dragon might during the ensuing battle with Flender, Yu Xiaogang was once again frightened into incontinence and left paralyzed on the ground. As Flender fled while carrying him away, Lu Xiao threw the Golden Dragon Spear after them, grievously injuring Yu Xiaogang’s lower body. He later regained consciousness at Shrek Academy, where Tang San informed him that the damaged part was beyond recovery. 111 112

Appearance

After Du Busi’s assault and his expulsion, Yu Xiaogang is depicted as severely disheveled and visibly impoverished in appearance. 7 8

• Tattered, wrinkled clothing stained with dust and grime. 8
• Tangled hair, sallow complexion, and a hunched, listless posture. 8
• Bandages wrapped around his head following Du Busi’s attack. 8
• Initially maintained neat robes before being sent flying and bloodied by Du Busi. 2
• Following the Golden Dragon Emperor incident, he is left bedridden at Shrek Academy while recovering from his grievous lower-body injury. 112

Personality

Yu Xiaogang is prideful, dogmatic, and deeply invested in validating his martial-soul theories. Even after his public humiliation, injury, and expulsion, he repeatedly insists that his theories cannot be wrong. 2 7

He is also opportunistic in his search for disciples. He initially sought Lu Xiao after noticing his innate full soul power, then fixated on Tang San after identifying his twin martial souls as a means to restore his reputation. 1 7 8

Yu Xiaogang remains unable to accept rejection. Years after Lu Xiao refused him, he again attempted to recruit the Golden Dragon Emperor by presenting his theoretical authority and claimed dragonification knowledge as inducements. 110

Despite this self-interest, Yu Xiaogang defended Old Jack and Tang San from the academy gatekeeper and later remained devoted to Tang San after the latter’s expulsion. 7 22

Abilities & Skills

Martial Soul Theory

Yu Xiaogang possesses specialized knowledge of martial souls and soul-beast selection, though his conclusions are not always reliable.

• Identified that Tang San’s innate full soul power was inconsistent with Blue Silver Grass alone and deduced that he had twin martial souls. 8
• Claimed to have studied 647 people with Blue Silver Grass martial souls; only sixteen had soul power, none above level one. 8
• Proposed that innate soul power is directly proportional to martial-soul quality. 8
• Is known as the creator of the Ten Core Competencies of Martial Soul theory. 110
• Claimed familiarity with the Blue Lightning Tyrant Dragon Clan’s dragonification methods and offered to teach them to the Golden Dragon Emperor. 110
• Misjudged a mutated Lone Bamboo as a century-level soul beast based on its size; it was actually ninety-nine years old. 13 15
• Failed to inspect the soul ring’s true age with soul power before Tang San absorbed it. 15

Luo Sanpao

Yu Xiaogang’s mutated martial soul is Luo Sanpao, a pale-purple, pig-like beast.

• Summoned with two century-level soul rings. 13
• Described by Yu Xiaogang as a mutated martial soul. 13
• Its appearance is accompanied by a sound compared to a fart. 13

Relationships

• Lu Xiao — Attempted to recruit Lu Xiao as a disciple after his awakening, but was rejected; Yu Xiaogang’s dismissal of the Body Martial Soul led directly to Du Busi’s retaliation. 1 2 Years later, he unknowingly tried to recruit Lu Xiao again while Lu Xiao was masked as the Golden Dragon Emperor. Lu Xiao’s dragon might terrified Yu Xiaogang into paralysis, and his Golden Dragon Spear permanently mutilated him during Flender’s escape. 110 111 112
• Du Busi — Adversary; Du Busi humiliated, severely injured, and indirectly caused Yu Xiaogang’s expulsion from Notting Academy. 2
• Tang San — Teacher and disciple; Yu Xiaogang views Tang San’s twin martial souls as the chance to validate his theories and later vows to help him reach the level of an eighteen-spirit-ring Title Douluo. 7 8 22 Tang San later tended to Yu Xiaogang during his recovery at Shrek Academy. 112
• Old Jack — Defended him and Tang San from a gatekeeper’s accusations at Notting Academy. 7
• Dean of Notting — Expelled Yu Xiaogang after he offended Du Busi. 2
• Tang Hao — Tang Hao considers Yu Xiaogang’s theories commendable enough to teach the young Tang San temporarily. 8
• Flender — Old friend and the headmaster of Shrek Academy. Flender joined Yu Xiaogang in recruiting the Golden Dragon Emperor, then fled with the severely injured Yu Xiaogang after being defeated by Lu Xiao. 110 111
• Blue Lightning Tyrant Dragon Clan — Yu Xiaogang originates from the clan and invokes its dragonification techniques as a source of authority when recruiting dragon-type martial-soul wielders. 110

Story Role / Major Arcs

Lu Xiao’s Awakening and Expulsion

Yu Xiaogang dismisses Lu Xiao’s Body Martial Soul, unsuccessfully attempts to make him a disciple, and is crushed by Du Busi’s intervention. Notting Academy subsequently expels him. 1 2

Meeting and Accepting Tang San

After defending Tang San and Old Jack at the academy gate, Yu Xiaogang deduces Tang San’s twin martial souls and accepts him as his disciple. 7 8

Lone Bamboo Misjudgment

Yu Xiaogang selects a mutated ninety-nine-year Lone Bamboo for Tang San, mistakenly believing it to be a century-level soul beast. Tang San absorbs the resulting pseudo-hundred-year soul ring. 13 15

Tang San’s Expulsion

After Tang San is exposed and expelled, Yu Xiaogang leaves Notting Academy carrying his injured disciple and renews his promise to help Tang San surpass the limits of twin martial souls. 22

Shrek Academy Recruitment Attempt

As a representative of Shrek Academy, Yu Xiaogang joins Flender in attempting to recruit the Golden Dragon Emperor and his companions. He offers the clan’s dragonification knowledge to the Golden Dragon Emperor, but is rejected without realizing that his target is Lu Xiao. 103 110

Golden Dragon Emperor Encounter

Yu Xiaogang is overwhelmed by the Golden Dragon Emperor’s dragon might and becomes incontinent and immobilized. Flender’s attempted escape with him ends with Yu Xiaogang being struck in the lower body by the Golden Dragon Spear, leaving him permanently castrated despite surviving the encounter. 111 112