Yu Xiaogang

Biodata

Feature	Information
Name	Yu Xiaogang (玉小刚)
Alias(es)	“Master”; theoretical master; Tang San's godfather 65 66
Gender	Male
Affiliation	Golden Iron Triangle; Slime Academy; formerly of the Blue Lightning Tyrant Dragon Clan 15 124 233
Occupation/Role	Martial soul theorist and mentor; instructor and strategist for Slime Academy 65 161 162
Status	Deceased; bled to death while unable to reach Bibi Dong 349
First Appearance	Chapter 15

Background / History

Born into the Blue Lightning Tyrant Dragon Clan, Yu Xiaogang awakened the mutated Boar Beast martial soul Luo Sanpao and possessed only level 0.5 Innate Soul Power. His cultivation later stagnated at level 29, leaving him reliant on martial soul theory rather than personal strength. 15 96 233

He travelled with Flender and Liu Erlong as the Golden Iron Triangle. During their visit to the Star Dou Great Forest, he recognized the danger posed by Hu Yan Zhen's Diamond Mammoth martial soul and urged Liu Erlong to retreat. He also persuaded Liu Erlong to apologize after she offended Hu Yan Zhen's grandson. 15 16

Yu Xiaogang married Liu Erlong, though their marriage was disrupted when Yu Luomian revealed that they were cousins. At the wedding, Yu Xiaogang failed to recognize Bibi Dong—his former lover—after nine years apart, devastating her. 20 21 22

After the Golden Iron Triangle separated, Yu Xiaogang withdrew to Nuoding City and focused on his research. Tang Hao later visited him, asked about mind-controlling martial souls and Qian Cheng, then entrusted infant Tang San to him. Yu Xiaogang agreed to raise Tang San to adulthood and became his godfather. 65 66

As Tang San's mentor, Yu Xiaogang strictly enforced his own soul-ring theory. He slapped Tang San for attempting to absorb a plant-type soul ring above five hundred years, insisting that a first soul ring could not exceed 427 years. 74 75

Appearance

Yu Xiaogang was initially described as a man around thirty with a short crew cut and a restrained but arrogant demeanor. 15

• Often carried a worn copy of Ten Core Competencies of Martial Soul. 65
• Lost his left arm during a confrontation with Spirit Hall. 92 95
• During his final decline, his once-expensive robes became dusty and ragged as he endured hunger and homelessness in Spirit City. 232
• His tongue was severed by the Heavenly Curtain's punishment. 268

Personality

Yu Xiaogang placed great faith in his theoretical knowledge and status as a “Master.” He reacted angrily when Tang San questioned his soul-ring limits or when developments in the tournament contradicted his understanding of martial souls. 74 169 222

He was protective of Tang San and repeatedly intervened when Tang San risked provoking stronger forces, including forcing him to apologize during Xiao Wu's public humiliation. However, this protectiveness was closely tied to Yu Xiaogang's ambition to use Tang San's success to prove that he was not “trash.” 166 173

Following the defeat of the Upper Three Sects, his pride persisted despite his destitution. He regarded ordinary citizens with contempt even as he depended on them for food and shelter. 232 233

Abilities & Skills

Martial Soul: Luo Sanpao

Yu Xiaogang's martial soul was Luo Sanpao, a mutated Boar Beast. Its weak awakening and his level 0.5 Innate Soul Power limited his individual cultivation. 15 96

• Yu Xiaogang possessed two soul rings before later losing access to the martial soul. 124 235
• He attempted to summon Luo Sanpao while fighting a homeless man, only to discover that it no longer responded. 235
• Yu Xiaogang believed Qian Cheng had erased the martial soul, though this was his own conclusion. 235

Martial Soul Theory

Yu Xiaogang researched martial souls and authored Ten Core Competencies of Martial Soul. He was consulted by Tang Hao on spiritual-type martial souls capable of controlling thoughts. 65 66

• Advised Tang San on spirit-ring selection and long-term development. 74 160
• Explained the altered rules and structure of the Continental Elite Spirit Master Tournament to the Slime Academy team. 161 162
• His theories were challenged by unprecedented spirit-ring configurations, including opponents with Ten Thousand Year rings far beyond conventional limits. 169 174

Golden Iron Triangle Fusion

Together with Flender and Liu Erlong, Yu Xiaogang could perform the Golden Iron Triangle's martial soul fusion technique, Sun-Moon Radiance Golden Transformation. 124

• The trio's combined sixteen soul rings empowered Luo Sanpao, transforming it into a twenty-meter golden dragon with wings. 124
• Yu Xiaogang called the transformed being his “true power” and claimed it could contend with a Titled Douluo. 124
• The fusion was forcibly broken when Yu Xiaogang was struck during the Heaven Dou Royal Academy confrontation. 125

Equipment / Items

• Ten Core Competencies of Martial Soul — Yu Xiaogang's worn theoretical text. 65
• Pope's Token — Presented during the Spirit Hall incident, but found to be invalid. 92
• Countdown watch — Given to him by Qian Renxue as a “life countdown” after his fall into poverty. 236

Relationships

• Liu Erlong — Wife and Golden Iron Triangle partner. She was fiercely devoted to him, defended him against Shui Hanyan, and attempted to take his tongue-extraction punishment in his place. Their marriage was complicated by the revelation that they were cousins. 20 22 187 268
• Flender — Golden Iron Triangle partner and close companion. Flender witnessed Yu Xiaogang's marriage to Liu Erlong despite loving her himself, and later supported Yu Xiaogang's work with the Slime Academy team. 20 124 182
• Bibi Dong — Former lover. Yu Xiaogang did not recognize her when they met again after nine years; she remained emotionally attached to him and helplessly watched his death. 20 21 349
• Tang Hao — Former acquaintance who entrusted infant Tang San to Yu Xiaogang while fleeing Spirit Hall. 66
• Tang San — Adopted son/godson and student. Yu Xiaogang trained, disciplined, and strategized for him, while Tang San often relied on his guidance despite privately doubting his theories. 66 74 160 173
• Qian Renxue — Enemy who orchestrated his final degradation in Spirit City, gave him the countdown watch, and later made him intangible to Bibi Dong as he died. 236 349
• Shui Hanyan — Humiliated Yu Xiaogang with three slaps and a kick after he invoked his clan and theoretical reputation. 187
• Miles — Former Spirit Hall bishop and vagrant who offered Yu Xiaogang food in exchange for joining his group of prisoners. 239

Story Role / Major Arcs

Golden Iron Triangle and Marriage

Yu Xiaogang accompanies Liu Erlong and Flender to the Star Dou Great Forest, where Liu Erlong obtains her sixth soul ring. He later marries Liu Erlong before Yu Luomian exposes their blood relation. 15 20 22

Tang San's Guardian and Mentor

After Tang Hao entrusts Tang San to him, Yu Xiaogang becomes Tang San's godfather and instructor. He guides Tang San's cultivation, imposes his soul-ring theory, and helps direct the Slime Academy team. 66 74 160

Spirit Master Tournament

Yu Xiaogang explains the tournament's expanded rules, prepares Slime Academy's tactics, studies rival teams, and seeks to develop a Four-in-One Spirit Avatar Fusion Skill. His confidence is repeatedly shaken by opponents whose martial souls, ring configurations, and cultivation exceed his theoretical expectations. 161 169 173 174

Fall from Grace

After the Upper Three Sects' defeat, Yu Xiaogang enters Spirit City penniless and is publicly denounced for his relationship with Liu Erlong and his reputation as a fraudulent theorist. Unable to pay for food or lodging, he becomes homeless, is beaten by a vagrant, and loses access to Luo Sanpao. 232 233 234 235

Qian Renxue confronts him during this collapse. Yu Xiaogang begs to become her obedient “dog,” but she gives him only a watch counting down his remaining life. 236

Final Punishments and Death

The Heavenly Curtain selects Yu Xiaogang for tongue extraction, leaving him unable to speak or teach normally. Flender, Liu Erlong, and the Shrek Seven Devils rally around him, while Bibi Dong attacks the Heavenly Curtain in rage. 268

Yu Xiaogang is later mortally wounded and crawls toward Bibi Dong. Qian Renxue makes him intangible to her, ensuring that Bibi Dong can only watch as he dies from blood loss. 349

Notable Quotes

“There can be no problem with my theory.” 74

“This is my true power—powerful enough to contend head-on with a Titled Douluo, overwhelming power that can crush everything!” 124

“If only I had been the one to undergo the God Examination back then...” 224