Yu Xiaogang

Biodata

Feature	Information
Name	Yu Xiaogang (玉小刚)
Alias(es)	Master
Gender	Male
Affiliation	Nuoding Academy; formerly Shrek Academy and Heaven Dou Academy
Occupation/Role	Soul Master theorist; instructor; Tang San's teacher
Status	Imprisoned in Martial Soul Hall's Black Prison 230 232
First Appearance	Chapter 5

Background / History

Yu Xiaogang became Tang San's teacher after correctly deducing that Tang possessed Twin Martial Souls. He attributed the conclusion to his research into 647 Blue Silver Grass martial souls and his “Ten Core Competencies of Martial Soul”; Tang San formally kowtowed and called him a second father. The narration characterizes the deduction's process as luck rather than sound reasoning, though Yu Xiaogang himself remained convinced of his wisdom. 5

At Nuoding Academy, he was known to be nearly fifty yet stuck at Level 29 and was derided for freeloading meals. Tang San fiercely defended him, while Yu Xiaogang encouraged Tang to disregard other students and promised to create a specialized development plan for Blue Silver Grass. 11

Yu Xiaogang recommended attaching a Poison Attribute soul ring to Tang San's Blue Silver Grass, arguing that the martial soul's inclusiveness allowed it to gain offensive power through poisonous plant-type soul beasts. Tang San accepted this reasoning. 12

He later joined Shrek Academy as an instructor and imposed physical-conditioning training on the students, including repeated weighted runs and medicinal baths. He framed the program as training perseverance, teamwork, and foundations, while some students privately questioned its value. 79

After Shrek Academy merged into Heaven Dou Academy, Yu Xiaogang became the head teacher of Heaven Dou Class One despite being only a Level 29 Soul Grand Master. He sought to recruit Yang Yuan as a disciple, believing his theory could make Yang a Titled Douluo within twenty years. 98 103

Yang Yuan publicly rejected him, challenged the value of his theories, and accused him of plagiarism. The resulting ridicule caused Yu Xiaogang to vomit blood and collapse; his reputation at Heaven Dou Academy was ruined. 103 105

He continued directing Heaven Dou Class Four's training and focused on proving himself through Tang San and the Shrek team in the Continental Advanced Soul Master Competition. 106 117

Following severe injuries inflicted during the competition, Yu Xiaogang's meridians could not be healed and he lost his manhood. He became withdrawn, irritable, and increasingly fixated on Tang San becoming powerful enough to restore his reputation and potentially avenge him against Yang Yuan. 168 193 194

After Qian Renxue learned of his past relationship with Bibi Dong, she ordered Martial Soul Hall to locate him. He was captured at Nuoding Academy, taken to Martial Soul Hall, and placed in the Black Prison, where he awoke injured and traumatized after abuse by inmates. 229 230 232

Personality

Yu Xiaogang projects intense self-confidence and often treats his own conclusions as proof of exceptional wisdom. This certainty impressed Tang San and several Heaven Dou Committee Members initially, but it also led him to overestimate his authority over Yang Yuan and disregard others' doubts. 5 98 103

He is highly sensitive to ridicule and professional disrespect. Although he claims to endure public scorn, humiliation over his theories and low cultivation repeatedly provokes defensiveness, anger, or collapse. 11 103 109

His devotion to Tang San is genuine and central to his identity. He encourages Tang after defeats, treats him more warmly than others during his own recovery, and places his remaining hopes for vindication on Tang's future achievements. 127 194 195

After his crippling injury, his pride and inferiority complex intensify. He interprets Liu Erlong's care as pity, responds coldly to her, and becomes emotionally unstable. 194

Abilities & Skills

Soul Master Theory

Yu Xiaogang presents himself as a foremost theorist and uses research, martial-soul analysis, and cultivation planning to guide students.

• Investigated 647 Blue Silver Grass martial souls while formulating his deduction of Tang San's Twin Martial Souls. 5
• Proposed a Poison Attribute soul-ring route for Tang San's Blue Silver Grass. 12
• Identified Yang Yuan's Eye Martial Soul as God-Tier and concluded that Yang possessed Innate Level 20 Soul Power. 84
• His theoretical work was publicly accused of plagiarism by Yang Yuan, ending his credibility at Heaven Dou Academy. 103

Training and Instruction

Yu Xiaogang develops strict, physically demanding regimens for his students.

• Uses weighted running and other extreme physical-fitness drills without soul power. 79
• Employs medicinal baths alongside physical training. 79
• Emphasizes perseverance, teamwork, and preparation for tournament combat. 79 106
• Continues overseeing training after his public disgrace, seeking to prove his methods through the Shrek team. 106 117

Soul Power

Yu Xiaogang possesses Level 29 Soul Power and is described as a Soul Grand Master. His cultivation remained stalled at this level into middle age. 11 98 99

• Could not resist Martial Soul Hall enforcers when captured. 230
• His meridians were irreparably damaged after later injuries, further limiting his condition. 193

Relationships

• Tang San — Disciple and primary source of Yu Xiaogang's pride; Tang regards him as a second father and repeatedly defends his honor. Yu Xiaogang stakes his hopes of vindication and revenge on Tang's future strength. 5 11 194 195
• Yang Yuan — Former Nuoding Academy acquaintance whom Yu Xiaogang repeatedly tried to recruit as a disciple. Yang publicly rejected him and exposed accusations of plagiarism, contributing to Yu Xiaogang's downfall. 30 98 103
• Liu Erlong — Longtime lover and cousin. She remains devoted after his crippling injury, but he rejects her care as pity. 127 194
• Flender — Old friend and fellow Shrek instructor. Flender attempts to restrain Yu Xiaogang during his confrontation with Yang Yuan and later tries to support him after his injuries. 98 103 168
• Yu Tianheng — Nephew. Yu Tianheng maintains contact with Yu Xiaogang despite the latter's expulsion from the Blue Lightning Tyrant Dragon family. 85 88
• Yu Yuanzhen — Father and Blue Lightning Tyrant Dragon family head. Yu Xiaogang was expelled from the family, though Yu Yuanzhen later arranged healing assistance after his injuries. 85 193
• Bibi Dong — Former love interest from thirty years earlier; she once intended to elope with him. Their past becomes the reason Qian Renxue targets him. 229
• Qian Renxue — Orders his capture after learning of his connection to Bibi Dong and sends him to the Black Prison. 229 230

Story Role / Major Arcs

• Tang San's apprenticeship — Deduces Tang San's Twin Martial Souls, accepts him as a disciple, and establishes the master-disciple bond. 5
• Nuoding Academy instruction — Designs Tang San's Blue Silver Grass development route and considers recruiting Yang Yuan and Xiao Wu. 11 12 17
• Shrek training — Arrives at Shrek Academy and begins extreme physical-fitness training for its students. 79
• Heaven Dou Academy downfall — Takes control of Heaven Dou Class One, attempts to take Yang Yuan as a disciple, and is publicly discredited after the plagiarism accusation. 98 103
• Class Four and tournament campaign — Continues training the Shrek team to prove his worth through the Soul Master Competition. 106 117
• Crippling injury and recovery — Suffers irreversible meridian damage and loss of manhood, becoming increasingly dependent on Tang San as his hope for the future. 168 193 194
• Martial Soul Hall imprisonment — Captured on Qian Renxue's orders and confined in the Black Prison. 230 232

Notable Quotes

“A teacher for a day is a father for life. From now on, you are my second father.” — Tang San to Yu Xiaogang 5

“There are only worthless Martial Souls, not worthless Soul Masters.” 98

“You possess the most extraordinary talent in the world, and I hold the strongest theories on the continent.” 103

Trivia

• Yu Xiaogang was nearly fifty years old while still at Level 29. 11
• He became Heaven Dou Academy's first Heaven Dou-level teacher at Soul Grand Master rank. 98
• Black Prison inmates gave him the humiliating nickname “Rose in Prison.” 232