Yu Xiaogang

Biodata

Feature	Value
Name	Yu Xiaogang (玉小刚)
Alias(es)	Grandmaster; Master Xiaogang; “Theoretically Invincible” 48 50
Gender	Male
Affiliation	Nuoding Academy; Shrek Academy; formerly the Blue Electric Tyrant Dragon Sect 50 121
Occupation/Role	Martial Soul Theory Master; Shrek Academy theoretical advisor, nutritionist, and homeroom teacher 50
Status	Deceased — killed when Luo San Pao rebelled during Yu Xiaogang’s attempt to absorb it 210 214
First Appearance	Chapter 5

Power Progression

Stage / Realm / Level	Chapter	Notes
Level 18	29	Reportedly reached after completing the System mission to help two classmates besides Tang San obtain their first Spirit Rings.
Level 30 — Soul Elder	29	The System awarded a breakthrough to Level 30, allowing him to seek another Soul Ring.
Third Soul Ring acquired	30	Absorbed his third Soul Ring; Luo San Pao evolved into a spherical form.
Level 30.2	31	After two years of uninterrupted cultivation, his Soul Power had risen only by one tenth of a level.
Level 31	106	The System had previously helped him reach Level 31 before becoming largely unresponsive.

Background

Yu Xiaogang was born the son of the Blue Electric Tyrant Dragon Sect’s sect master. The sect attempted to improve his potential with Heavenly Treasures, but he could not fully absorb their power and retained only Innate Half-level Soul Power. His expected Golden Sacred Dragon Martial Soul consequently devolved into the boar-like Luo San Pao. 121 159

His relationships with the Martial Soul Hall’s Saintess and his own cousin made his name widely known, but also led to his expulsion from the Blue Electric Tyrant Dragon Sect. 121

He spent years studying at Martial Soul Hall and later became known for the Ten Core Competencies of Martial Soul. Yu Xiaogang considered them the product of decades of research that benefited ordinary Soul Masters; however, Seven Treasure Glazed Tile Sect elders accused him of copying knowledge from Martial Soul Hall’s library. 148 190

Appearance

Yu Xiaogang is a middle-aged man of average build who typically wears a gray robe and keeps his hair cropped short. 5 172

• Often stands with his hands behind his back and his head tilted upward at a forty-five-degree angle. 50 172
• Commonly strokes his beard or stubble while presenting theories. 20 119
• His robe is described as unwashed for months when he presents Oscar’s Soul Ring plan. 71
• Became the subject of academy gossip after sleeping naked with his dormitory door open. 16 17

Personality

Yu Xiaogang is highly vain and protective of his reputation as a Theory Master. He frequently boasts about his connections, knowledge, and supposed standing among powerful Soul Masters, and reacts angrily when his theories are dismissed. 20 21 190

He is ambitious and willing to manipulate others for personal advancement. The System’s rewards strengthen his confidence, while his fear of punishment often compels him to accept its missions. He also attempts to leverage Ning Rongrong’s family, Tang San’s hidden weapons, and Tang San’s identity when such opportunities arise. 18 70 118 195

Despite his selfishness, Yu Xiaogang can show commitment to his students. He arranged a Soul Emperor referee for dangerous arena matches, developed plans for Oscar’s cultivation, and later guided the Shrek Four Heavenly Kings on a journey framed around helping others. 69 71 113

Abilities & Skills

Luo San Pao

Yu Xiaogang’s detached Beast Spirit is Luo San Pao, a mutated pig-dog-like Martial Soul that can act independently of his body. It was originally a devolved form of the Golden Sacred Dragon. 21 71 159

• Can be summoned as a physical combatant and controlled at range. 71
• Its First Soul Skill produces an explosive, foul-smelling yellow mist capable of blasting back Great Strength Pigs. 25
• Yu Xiaogang later calls the First Spirit Ability Earth-Shattering Roar of Luo San Pao when threatening a waiter. 186
• Under a System enhancement, Luo San Pao expanded to an enormous 444-cubic-meter size and incapacitated Soul Ancestor Wan Rentu with its blast and stench. 174 176
• Luo San Pao is ultimately revealed as a Ten-Thousand-Year Soul Beast capable of transforming into a Golden Sacred Dragon. 210
• It possesses its own will and killed Yu Xiaogang after he attempted to absorb it for power. 209 210

Soul Skills

• Fart Like Thunder — Luo San Pao releases a powerful and nauseating explosive mist; Yu Xiaogang prepared masks only for himself and Tang San during its use. 25
• Twist Waist and Wag Tail Luo San Pao — a Soul Skill gained after his third Soul Ring; it is described as a comedic failure. 30

Martial Soul Theory and Instruction

Yu Xiaogang’s principal strength is his claimed knowledge of Martial Souls, Soul Rings, and cultivation planning.

• Proposed that Tang San’s Twin Martial Souls could each receive Soul Rings at the same stages, potentially creating a level advantage over peers. 9
• Classified Tang San’s Blue Silver Grass as suited to a control-type Battle Soul Master role after obtaining Blue Silver Entanglement. 25
• Designed Oscar’s “Soul Ring Plan, Refined Edition,” arguing that externally summoned Food-Type Martial Souls could potentially gain combat ability through suitable Soul Rings. 71
• Identified an Amplifying Soul Tool from its ability to extend a voice transmission over an unusual distance. 148
• Defended the Ten Core Competencies of Martial Soul as practical guidance that helped low-level Soul Masters choose Soul Beasts and Soul Rings. 190

System

Yu Xiaogang is bound to a System that assigns compulsory missions, imposes punishments, and grants Soul Power rewards.

• Failure to complete an early mission caused the System to revoke his third level of Soul Power. 6
• Refusing a later mission carried the threat of having a random organ removed. 18
• Missions included taking Tang San as a disciple, helping other students obtain Spirit Rings, and leading the Shrek Four Heavenly Kings to perform good deeds. 6 18 107
• The System directly elevated him to Level 30 and temporarily strengthened Luo San Pao during the Martial Arts Tournament for Marriage. 29 174

Equipment / Items

• Third-class Martial Soul Hall writ — engraved with a sword, hammer, and Blue Lightning Tyrant Dragon; allowed entry into Soul Hunting Forests in the Heaven Dou Empire. 21
• Storage Spirit Tool belt — a belt with twenty-four gems, each providing roughly one cubic meter of storage space; Tang San stole it while Yu Xiaogang was unconscious. 16 18
• “Xiao Ao’s Soul Ring Plan, Refined Edition” — a booklet outlining his proposed Soul Ring path for Oscar. 71

Relationships

• Tang San — First disciple. Yu Xiaogang recognized Tang San’s Twin Martial Souls, taught him cultivation theories, and accompanied him on early Spirit Ring hunts; their relationship later collapsed after Tang San blamed him for poor Soul Ring choices, losing his arms, and exposing Tang San’s identity to the Soul Emperors. 8 18 195 209
• Oscar — Registered disciple and Tang San’s junior disciple. Oscar sought Yu Xiaogang’s guidance after hearing his theory that Support-Type Soul Masters could gain combat power. 71
• Flender — Dean of Shrek Academy and Yu Xiaogang’s associate; Flender appointed him as the academy’s theoretical advisor, nutritionist, and homeroom teacher. 49 50
• Luo San Pao — His detached Beast Spirit. Yu Xiaogang relied on it in combat and even used it to cushion a fall, but Luo San Pao later rebelled and killed him. 209 210
• Tang Hao — Tang San’s father. Tang Hao confronted Yu Xiaogang over Tang San’s Twin Martial Soul cultivation and Soul Ring quality; Yu Xiaogang deceived him with his theories. 30
• Martial Soul Hall Saintess and his cousin — Yu Xiaogang’s past relationships with both women contributed to his notoriety and expulsion from the Blue Electric Tyrant Dragon Sect. 121

Story Role / Major Arcs

• Nuoding Academy — After being conned at the Rose Restaurant and punished by the System, Yu Xiaogang accepts the mission to save Tang San and make him his disciple. He identifies Tang San’s Twin Martial Souls through his Martial Soul Hall certificate. 6 8
• Soul Hunting Forest expedition — He brings Tang San, Li Chen, and Xiao Wu to obtain their first Spirit Rings, using his Martial Soul Hall writ and Luo San Pao’s offensive mist during the journey. 18 21 25
• System breakthrough — Completing the mission to assist additional students earns him a rise to Level 30, after which he obtains a third Soul Ring and becomes increasingly confident in the System’s power. 29 30
• Shrek Academy instructor — Yu Xiaogang becomes the students’ theoretical advisor, nutritionist, and homeroom teacher, claiming Tang San’s growth as proof of his instruction. 50
• Arena training and continental journey — He secures protection for the group’s dangerous arena training, trains Oscar as a registered disciple, and later leads the Shrek Four Heavenly Kings toward the Heaven Dou imperial city. 69 71 113
• Expulsion and Martial Arts Tournament for Marriage — Yu Xiaogang and Tang San are expelled from Shrek Academy after the Skywater Academy match. He later enters a marriage tournament, where outside interference ensures he faces Wan Rentu. 133 173
• Break with Tang San and death — To save himself from the Soul Emperors, Yu Xiaogang reveals that Tang San is Tang Hao’s son and promotes his Twin Martial Soul method. During their later fall, he summons Luo San Pao as a cushion; when he tries to absorb it, the transformed Golden Sacred Dragon kills him. 195 196 209 210

Notable Quotes

“Since I have no offspring of my own, I will surely teach you everything I know!” 8

“You can say I’m weak in strength, but you can’t say my theories are weak!” 190

Trivia

• Yu Xiaogang’s public reputation is repeatedly damaged by being conned, overcharged, accused of misconduct, and discovered sleeping naked with his door open. 6 16 21
• He once believed that merely invoking his name could earn respect or discounts in Nuoding City. 11
• Tang San publicly described him as the continent’s “fourth” Limit Douluo, qualified only by being “theoretically invincible.” 48 50