Master Yu

Biodata

Feature	Information
Name	Yu Xiaogang
Alias(es)	Master Yu; Grandmaster; Gangzi; Rose; Flat-top
Gender	Male
Affiliation	Nuoding Junior Soul Master Academy; Shrek Academy; Blue Lightning Tyrant Dragon Clan; Golden Iron Triangle. Shrek's surviving veterans later reject his authority and order him to leave. 48 113 312
Occupation/Role	Spirit master theorist; Nuoding Academy principal; mentor and trainer
Martial Soul	Luo Sanpao, a defective martial soul that failed to evolve into the Golden Sacred Dragon. 124 127
Cultivation	Level 29 Soul Grandmaster; no confirmed breakthrough beyond level 29. 14 117 312
Family	Yu Yuanzhen, his father; Yu Tianheng, his nephew; Liu Erlong, his relative and love interest. 114 115 116 233 250
Status	Alive; one-armed and castrated, with his father and Golden Iron Triangle partners deceased. 288 310 312
First Appearance	Chapter 2

Power Progression

Period	Cultivation / Condition	Details
Nuoding Academy period	Soul Grandmaster	Yu's low cultivation is publicly exposed when Lin Nuo notes that he is not even a Soul King. 6
Shrek Academy period onward	Level 29 Soul Grandmaster	He remains stalled below level 30 and seeks Immortal Herbs, martial soul evolution, and external cultivation methods as potential means of improving himself and Luo Sanpao. 127 140 141
Post-Nuoding period	One-armed Soul Grandmaster	Yu has lost his left arm and continues to cultivate and advise others with only his right arm remaining. 19 124
Spirit City and tournament-finals period	Physically debilitated one-armed Soul Grandmaster	Yu fails to gain Bibi Dong's resources or cultivation secrets, is repeatedly beaten and detained in Spirit City, and returns to Shrek in a severely disheveled and unstable condition without any known cultivation advancement. 219 221 226 236 250
Clear Sky inheritance confrontation	Level 29 Soul Grandmaster; temporary access to Golden Sacred Dragon fusion power	Despite being badly injured by Tang San, Yu reunites with Flender and Liu Erlong to perform their Trinity Martial Soul Fusion Skill, forming the Golden Sacred Dragon. This is shared fusion power rather than a personal cultivation breakthrough. 287
After the battle at Shrek Academy	One-armed, castrated Soul Grandmaster; Golden Sacred Dragon fusion lost	Tang San binds and castrates Yu after Yu Yuanzhen's protective Soul Power collapses. Liu Erlong's death dissolves the fusion, and the eventual confirmation of both her and Flender's deaths leaves Yu unable to perform it again. 288 310 312
After Spirit Hall's sect attacks	Still level 29; bereaved and politically isolated	Yu Yuanzhen's death and the destruction of the Blue Lightning Tyrant Dragon Clan remove his remaining family protection. Yu acknowledges that his cultivation and theoretical title are insufficient to secure an audience with major powers, but still plans an anti-Spirit Hall alliance. 310 312

Background / History

Before his martial soul awakened, Yu Xiaogang was regarded as a promising future leader of the Blue Lightning Tyrant Dragon Clan. He began researching soul master theory at the age of three, and the clan invested substantial resources in him as Yu Yuanzhen's favored son. His eventual failure to meet those expectations contributed to the elders' distrust of Yu Yuanzhen's family branch. 48

Yu Xiaogang was acquainted with Bibi Dong in the past. Seeing Lin Nuo's resemblance to her and learning that his martial soul was the Death Demon Spider leaves Yu emotionally shaken; he retreats into Nuoding Academy in a daze. 2

At Nuoding, he accepts Tang San as his disciple and identifies Lin Nuo as someone whose connection to Bibi Dong may be useful. He initially advises Tang San to maintain good relations with Lin Nuo, then repeatedly attempts to recruit Lin Nuo himself. 4 5 6

Yu seeks Lin Nuo as both proof for his “Invincible Theory” and a possible source of Bibi Dong's Twin Martial Soul cultivation secrets. Lin Nuo rejects him and publicly challenges his strength and credentials, causing Yu to lose face. 5 6

During Tang San's first soul-ring hunt, Yu insists that compatibility matters more than ring age and pressures his disciple to accept a barely century-old Tyrant Flower ring. When Blue Silver Entangle proves ineffective, Yu conceals his alarm and declares the skill invincible among opponents of the same rank. His left arm is lost while protecting Tang San from a soul beast; Tang San's account that Lin Nuo could have intervened but refused subsequently prompts Yu to demand an apology from Lin Nuo. 14 15 65

After Tang San's defeat by Lin Nuo, Yu continues building Tang San's confidence, framing Lin Nuo as a future opponent to be surpassed at the Continental Advanced Spirit Master Elite Tournament. 21 65

He later arrives in Suotuo City and takes responsibility for training Shrek Academy's students for the tournament. 82 84

Yu recognizes Qin Ming's visit as a solution to Shrek's lack of tournament accreditation. Flender and Qin Ming then stage a disagreement over joining Blue Tyrant Academy, inducing Yu to advocate the move without initially recognizing its connection to Liu Erlong. His overriding concern is securing a platform for Tang San and his theories. 115 116

Following Shrek's relocation and its integration with Blue Tyrant Academy, Yu assumes leadership of the Shrek team, with Qin Ming serving as his assistant. He continues to use the tournament as an opportunity to validate his theories, reclaim status, and seek information about Lin Nuo's extraordinary advancement. 117 124 127

During Shrek's match against the Imperial Fighting Team, Yu unsuccessfully attempts to intervene when Lin Nuo places Tang San in danger. Tang San's defeat and subsequent injury further intensify Yu's hostility toward Lin Nuo and the forces protecting him. 130 136

After Tang Hao is gravely wounded, he entrusts Tang San to Yu's care. Yu accepts the responsibility eagerly, considers becoming Tang San's adoptive father, and begins pursuing resources, sectarian support, and cultivation methods to preserve Tang San's future. 136 140 156

Yu's first planned journey to Martial Soul City, intended to secure Bibi Dong's Twin Martial Soul cultivation method and Immortal Herbs, is interrupted when he is drugged, abducted, and assaulted in Tiandou City by Brother Scar and Brother Jie. Bibi Dong witnesses the incident and interprets it as evidence that Yu's private conduct differs from the idealized image she held of him. 141 143

After escaping and later being detained by the same men again, Yu attributes the attacks to Spirit Hall and presents Tang San with a sanitized account in which his assailants sought to seize the manuscript of his theories. He subsequently seeks the Clear Sky Sect's assistance through Tang Yuehua and Tang Xiao. 150 151 155 157 166

As Tang San's damaged Blue Silver Grass origin and Twin Martial Soul cultivation become increasingly urgent concerns, Yu repeatedly declares that he will obtain Bibi Dong's cultivation method. Privately, he intends to use possession of that method, Lin Nuo's ring-absorption secret, Immortal Herbs, and Clear Sky Sect techniques to reassert authority over Tang San. 177 192 209

Yu eventually reaches Spirit City and confronts Bibi Dong directly in Pope Palace. He demands Immortal Herbs, the Twin Martial Soul cultivation method, the secret to exceeding conventional soul-ring age limits, and resources to evolve Luo Sanpao; he also attempts to use reconciliation with Bibi Dong as a bargaining chip. Bibi Dong refuses all of his demands, rejects his assurances that Tang San can be controlled, and is enraged by his insulting assumptions concerning Lin Nuo's parentage. 219

After threatening Bibi Dong over Tang San and attempting to blackmail her with his knowledge of Lin Nuo's background, Yu is expelled from Pope Palace by Gui Mei. Angel Legion Soul Saints recognize him as “Rose,” beat him severely, and hand him over to Brother Scar, Brother Jie, and Huyan Bo for further captivity and abuse. 220 221 226

While Yu is absent, rumors about his relationship with Liu Erlong spread into a public scandal, damaging the Blue Lightning Tyrant Dragon Clan's reputation. Yu Yuanzhen blames his son for the resulting humiliation, while Liu Erlong openly defends their relationship. 233

Yu returns to Shrek without the Twin Martial Soul method and conceals the details of his time in Spirit City. When Tang San, Tang Xiao, Ning Fengzhi, and Yu Yuanzhen press him for results, he admits his failure; Tang San openly derides him as useless, while Yu Yuanzhen disciplines him again. Desperate to retain Tang San, Yu claims that observing Bibi Dong's second martial soul may provide a new research direction. 236

During the tournament finals, Yu remains vulnerable to Brother Scar and Brother Jie's coercion and gambling scheme, causing further humiliation and conflict with Liu Erlong and Flender. Tang San summons Yu Yuanzhen to punish him after Yu lashes out at Liu Erlong, but Yu interprets Tang San's subsequent demand that he continue refining Shrek's tactics as evidence of filial concern. 250

Although Tang San's respect for him has effectively collapsed, Yu continues attempting to restore his authority through the maxim that “a teacher for a day is a father for life.” He keeps the Clear Sky Sect's Ring Detonation and Great Sumeru Hammer manuals from Tang San as leverage, intending to withhold them until Tang San submits to his authority. 251 259

Yu publicly questions Bibi Dong about the promised Blue Silver Emperor Seed of Life and accepts her explanation that Yue Guan is cultivating it in Spirit City's medicinal garden. He then proposes forfeiting the Individual Knockout Tournament to preserve Shrek's strength for the afternoon Team Battle. Yue Guan forces him to kneel and kowtow for his disrespectful manner, and Lin Nuo defeats the strategy by also forfeiting, ensuring that Imperial Fighting and Shrek still face one another. 255 256

Shrek's Seven-in-One Fusion Skill fails to overcome Lin Nuo's genuine Soul Saint strength. Tang San is immobilized by Lin Nuo's Gravity Domain, and the team's formation becomes vulnerable to Titan Sky Shattering. The ensuing intervention and exposure of Xiao Wu's identity derail Shrek's tournament campaign; Tang Xiao ultimately escapes Spirit City with Tang San and Xiao Wu's remaining rabbit body. 258 264

After the tournament, Yu studies Ring Detonation and incorporates it into an expanded “Eleven Core Competencies of Martial Soul” manuscript, falsely claiming independent authorship. He deliberately excludes the Great Sumeru Hammer to retain leverage over Tang San. Platinum Bishop Salas agrees to publish the work, and Spirit Hall distributes it widely for its own strategic benefit. 284 285

The publication brings Yu renewed fame but threatens the alliance among the Upper Three Sects. Yu Yuanzhen beats him for exposing the Clear Sky Sect's inheritance, while Yu defends the act as retaliation against Tang San and the Tang Clan. Meanwhile, Tang Hao's final message leads Tang San and Tang Xiao to discover that Yu had withheld their secret techniques. They track him down at Shrek Academy. 284 285

Tang San physically attacks Yu and rejects their former teacher-disciple bond. Yu's appeal to paternal authority only intensifies Tang San's anger, and his offer to reveal the Great Sumeru Hammer fails to stop the threatened mutilation. Yu Yuanzhen intervenes, triggering a battle with Tang Xiao; Flender and Liu Erlong join Yu in forming the Golden Sacred Dragon to withstand the attacks. 286 287

Tang Xiao's hammer strike kills Liu Erlong and fatally injures Flender after the latter retaliates. During the chaos, Tang San binds and castrates Yu. Ning Fengzhi, Chen Xin, and Gu Rong arrive to halt the escalating confrontation, but the deaths permanently deprive Yu of the Golden Sacred Dragon fusion. 288 295 310 312

With Flender and Liu Erlong gone, Shrek's surviving veterans blame Yu for the academy's decline and bully him whenever Yu Yuanzhen is absent. Yu repeatedly blames Spirit Hall for the deaths, influencing Qin Ming to adopt the same interpretation. When Spirit Hall attacks the major sects, Qin Ming ignores Yu's warning and rushes toward the battlefield to avenge Flender. 310

News of Yu Yuanzhen's death at Bibi Dong's hands and the destruction of the Blue Lightning Tyrant Dragon Clan extinguishes Yu's remaining hope of family protection. He resolves to organize the Star Luo Empire, Clear Sky Sect, and Sea God Island against Spirit Hall, beginning with an approach to Tang San. Zhao Wuji and Shrek's surviving veterans reject his offer of “wealth and glory,” assert control of the academy, and order him to leave. His proposed alliance remains a plan rather than an established coalition. 310 312

Appearance

Yu is noted for his flat-top or buzz-cut hairstyle and later has a missing left arm. 2 83 124

• Often adopts a deliberately lofty posture when presenting himself as a theorist, including clasping his remaining right hand behind his back and looking upward. 115
• His missing left arm visibly distresses Liu Erlong. 124
• His left sleeve hangs empty following the loss of his arm. 124
• He later grows a beard and appears markedly older than when he was first known to Tang Xiao. 166
• Following his captivity and abuse in Spirit City, he returns to Shrek's lodgings disheveled, exhausted, and emotionally unstable. 236 250
• He wears a new scholar's robe for his reunion with Flender at Shrek Academy. 82
• Tang San's retaliation leaves him badly wounded and castrated, in addition to his existing missing arm. 286 287 288

Personality

Yu is intensely proud of his theoretical reputation and repeatedly describes his theories as “invincible.” He views powerful disciples—particularly Tang San and potentially Lin Nuo—as vehicles to validate those theories publicly. 6 8 65

He is also insecure about his limited personal cultivation; Lin Nuo's criticism that he is not even a Soul King provokes him into losing composure. 6 Although he presents himself as calm and authoritative before Tang San, he privately panics when Tang San's first soul skill proves weaker than expected and attempts to reframe it as a control-type advantage. 14

His concern for Tang San is genuine but entwined with ambition. Following Tang Hao's injury, Yu accepts responsibility for Tang San and considers becoming his adoptive father or surrogate father. 136 140

Yu is highly protective of his public image and readily reframes failures, humiliation, or adverse circumstances as proof of his own wisdom and suffering. After his abduction, he omits the nature of his ordeal when recounting it to Tang San and instead claims that his attackers were motivated by envy of his theories. 151 155

His paternal rhetoric toward Tang San increasingly conceals a desire for control. Yu plans to delay sharing the Twin Martial Soul cultivation method and Clear Sky Sect techniques until Tang San demonstrates sufficient filial obedience, intending to make his disciple formally submit to his authority. 187 209

Yu's failed Spirit City negotiation reveals an extreme sense of entitlement. He believes his past relationship with Bibi Dong entitles him to forbidden methods, Immortal Herbs, a Spirit Bone capable of restoring his arm, and even a renewed relationship with her; when refused, he casts himself as a victim and threatens Spirit Hall. 219 220

Despite being repeatedly humiliated, he remains dependent on Tang San's approval and on the prospect of continental fame through Shrek's victories. He returns to teaching and refining tactics as soon as he believes doing so may restore his status, even while privately resenting Tang San's contempt and planning to use withheld secrets against him. 244 250 251

His resentment later becomes explicitly vindictive. He justifies publishing Ring Detonation as revenge against Tang San and the Tang Clan, dismisses his father's warnings, and assumes that his theoretical reputation will shield him from consequences. Renewed recognition briefly restores his confidence, and he attributes Tang San's earlier failures to insufficient obedience to his theories. 285 286

Yu remains heavily dependent on stronger allies. During the confrontation with Tang San and Tang Xiao, he appeals to his father for rescue and calls for the Golden Iron Triangle's fusion when the battle threatens his life. His reaction to Liu Erlong's death includes distress over losing access to the Golden Sacred Dragon's power. 287 288

He persistently assigns blame to Spirit Hall, even for deaths directly caused by Tang Xiao. After his father's death and his clan's destruction, grief and anger drive him to imagine leading a broad resistance alliance. Nevertheless, he finally acknowledges that neither his level-29 cultivation nor the title of theoretical Grandmaster guarantees recognition from other powers. 310 312

Abilities & Skills

Spirit Master Theory

Yu is renowned as a spirit master theorist and is relied upon by Tang San, Flender, and Shrek Academy for cultivation advice and tournament preparation. 65 82 84

• Analyzes martial souls, spirit-ring compatibility, and team roles. 5 14
• Identifies Tang San's Clear Sky Hammer lineage from his second martial soul. 14
• Knows of the potential of Tang San's Blue Silver Grass and promises to help awaken it once Tang San reaches level 60. 140
• Develops battle tactics for Shrek, including using Oscar's Soul Power Sausage to add combat capability and auxiliary support. 127
• Proposes unorthodox remedies for Ma Hongjun's Evil Fire Phoenix backlash: castration or downgrading the martial soul. 84
• Attributes Tang San's stalled cultivation to an imbalance between the Clear Sky Hammer and the unawakened Blue Silver Emperor bloodline. This is his proposed explanation rather than a confirmed diagnosis; he privately considers, then rejects, the possibility that his soul-ring choices damaged Tang San's origin. 177
• Provides Shrek with an assessment of the Elephant Armor Academy's defensive, slow-moving Diamond Mammoth spirit masters. 203
• Refines and teaches Shrek's Seven-in-One Fusion Skill, using Ning Rongrong's Seven Treasure Glazed Tile Pagoda to harmonize the team's Soul Power and channel it into Tang San. 244 251
• Designs the fusion's application to let Tang San temporarily wield a Clear Sky Hammer phantom approaching the power of a Tool Soul Avatar. 244 257
• Studies Ring Detonation and expands his “Ten Core Competencies of Martial Soul” into an eleven-part manuscript by incorporating the Clear Sky Sect's secret technique. 284

Knowledge of Secrets and Resources

Yu possesses or claims knowledge concerning major soul master secrets, including Xiao Wu's transformed hundred-thousand-year soul beast identity, Ah Yin's Blue Silver Grass, Immortal Herbs, and Clear Sky Sect history. 141 156

• Gives Xiao Wu a remnant of Ah Yin's Blue Silver Grass to conceal her aura temporarily. 141
• Plans to seek Immortal Herbs to improve Tang San, the Shrek group, and his own martial soul, Luo Sanpao. 140 141
• Intends to use Bibi Dong and their past connection to obtain resources and evolve Luo Sanpao. 141
• Learns further details of Tang San's Blue Silver Emperor heritage, the Clear Sky Sect's history, and its secret techniques from Tang Hao and Tang Xiao. 136 166
• Intends to acquire the cultivation method for Twin Martial Souls from Bibi Dong and later present Clear Sky Sect techniques as his own research. 187 192 209
• Retains Tang Hao's Clear Sky Sect manual containing Ring Detonation and Great Sumeru Hammer methods, withholding it from Tang San to preserve leverage over him. 136 251 259
• Fails to obtain Bibi Dong's Twin Martial Soul method, high-age soul-ring absorption secret, Immortal Herbs, or a restorative Spirit Bone during his Spirit City visit. 219 236
• Recognizes that Ring Detonation can be used by martial souls other than the Clear Sky Hammer, unlike the Great Sumeru Hammer, and initially considers its value to the Blue Lightning Tyrant Dragon Clan. 136
• Publicizes Ring Detonation while deliberately keeping the Great Sumeru Hammer out of his manuscript. He later offers the withheld method as a bargaining tool when Tang San threatens him. 284 286
• His published Ring Detonation method is verified as genuine by Chen Xin and Gu Rong. Its authenticity does not establish Yu as its inventor or demonstrate that he personally performed the technique. 285

Leadership and Tournament Strategy

Yu leads Shrek's training and competitive preparations, acting as the team leader after the academy's restructuring. 84 117

• Works with Flender, Liu Erlong, and Qin Ming in directing Shrek's personnel and tournament preparations. 84 117 124
• Encourages Tang San to employ Tang Sect hidden weapons to secure victory against superior opponents. 127 196
• Attempts, alongside Flender, to challenge the tournament's acceptance of two Imperial Fighting Teams, though Qian Renxue dismisses the complaint. 196
• Orders Tang San to use the Seven-in-One Fusion Skill against Lin Nuo's Imperial Fighting Team, treating the match as the decisive test of his theories and Shrek's strength. 257
• His fusion formation briefly leads observers including Ning Fengzhi and Yu Yuanzhen to reassess the practical value of his theories. 257
• Proposes forfeiting the morning Individual Knockout Tournament so Shrek can enter the afternoon battle rested while its rivals expend their strength. Lin Nuo's matching forfeiture defeats the plan. 255 256
• His Seven-in-One formation fails against Lin Nuo's gravity-based restriction and leaves the fused team exposed to a powerful Spirit Bone attack. 258
• After losing his family protection, he proposes connecting the Clear Sky Sect, Star Luo Empire, and Sea God Island through Tang San, but fails to persuade Shrek's surviving veterans to provide an escort or support. 312

Trinity Martial Soul Fusion Skill

As a member of the Golden Iron Triangle, Yu can combine his martial soul with those of Flender and Liu Erlong to form the Golden Sacred Dragon. The fusion, also referred to as the Sun-Moon Radiant Golden Transformation, allows him to participate in power rivaling that of a Titled Douluo despite his own low cultivation. 287 312

• Reforms the Golden Sacred Dragon with Flender and Liu Erlong during Tang Xiao and Yu Yuanzhen's battle at Shrek Academy. 287
• The dragon is struck by Tang Xiao's hammer after Yu Yuanzhen partially weakens the attack. Liu Erlong bears the impact at the front of the formation, and her death causes the fusion to dissolve. 288
• The deaths of both partners permanently remove Yu's ability to perform this three-person fusion. His ambition to evolve Luo Sanpao into a Golden Sacred Dragon of his own remains unfulfilled. 127 310 312

Contested Authorship

Azure Luan Douluo alleges that Yu's published “core theories” were copied from Martial Soul Hall historical archives during Yu's time there. 101

• The accusation specifically concerns high-level, confidential Martial Soul Hall records. 101
• Yu nevertheless continues to present his theories as unrivaled. 8 65 115
• He later intends to rebrand the Ring Detonation and Great Sumeru Hammer techniques as research of his own before teaching them to Tang San. 187
• After Tang San becomes openly hostile, Yu instead treats the secret techniques as bargaining tools and vows not to provide them unless Tang San submits. 251
• He ultimately carries out the misappropriation of Ring Detonation, claiming that he independently researched it and presenting it as his eleventh core theory. The Great Sumeru Hammer remains excluded from publication as leverage over Tang San. 284
• Salas and Spirit Hall promote the manuscript despite suspicions about its source. Spirit Hall seeks both practical access to the technique and political advantage from the resulting conflict between the Clear Sky Sect and Blue Lightning Tyrant Dragon Clan. 284 285
• The publication renews Yu's continental fame but provokes direct retaliation from Tang San and Tang Xiao, culminating in the destructive battle at Shrek Academy. 285 286 287 288

Relationships

• Tang San — His primary disciple. Yu mentors Tang San from Nuoding through Shrek, encourages him after defeats, and later accepts responsibility for his future from Tang Hao. Yu views Tang San as both a surrogate son and the central proof of his theories, though their relationship is strained by Tang San's growing doubts and Yu's intention to withhold key cultivation methods. Tang San eventually recognizes Yu's self-serving motives, threatens him directly, and treats their bond as conditional on Yu's usefulness, while Yu continues trying to reclaim control through moral and paternal rhetoric. After discovering Yu's withholding and publication of Clear Sky secrets, Tang San explicitly rejects their former bond, attacks him, and castrates him. Despite this rupture, Yu later plans to invoke his position as Tang San's teacher to approach the Clear Sky Sect. 4 21 65 136 204 209 236 251 284 286 288 312 |
• Lin Nuo — A rejected prospective disciple whom Yu sees as a link to Bibi Dong, a source of Twin Martial Soul knowledge, and a means to prove his theories. Their relationship becomes openly hostile after Lin Nuo humiliates him. Yu remains determined to obtain the resources and cultivation secrets that he believes enabled Lin Nuo's growth. Lin Nuo later defeats Yu's forfeiture strategy and overcomes the Seven-in-One formation Yu prepared for Shrek. 2 5 6 124 127 209 256 258 |
• Bibi Dong — A former love interest whose history with Yu remains emotionally significant. Yu attempts to use their past relationship to obtain Immortal Herbs and the Twin Martial Soul cultivation method, but his first journey is interrupted by his abduction. Bibi Dong's trust in him is badly shaken after she witnesses his assault in Tiandou City. When he finally confronts her in Spirit City, she rejects his demands and his proposed reconciliation, while his insults and threats eliminate her remaining goodwill toward him. She later kills Yu Yuanzhen despite his appeal to their past affection and voices suspicion that Yu's original approach to her was directed by his clan. Yu responds to his father's death by planning an alliance against her and Spirit Hall. 2 22 141 143 192 219 220 310 312 |
• Tang Hao — Yu admires the Clear Sky Douluo and accepts Tang Hao's entrustment of Tang San after Tang Hao is severely injured. Yu also covets the potential applications of the Clear Sky Sect's Ring Detonation technique. Tang Hao's unexpected survival later terrifies Yu because Tang Hao could expose Yu's withholding and misuse of the Clear Sky Sect's secrets. Tang Hao's final message eventually alerts Tang San and Tang Xiao to the knowledge entrusted to Yu, prompting them to investigate his betrayal. 22 136 187 259 284 |
• Tang Xiao — Tang Hao's elder brother and the Clear Sky Sect Master. Yu seeks Tang Xiao's protection and guidance for Tang San while assuring him that he has a plan for Twin Martial Soul cultivation. Tang Xiao later supports Tang San's threats against Yu and warns him that even Yu Yuanzhen may not be able to protect him if he refuses to comply. After Ring Detonation is published, Tang Xiao restrains Yu during Tang San's retaliation, battles Yu Yuanzhen, and kills Liu Erlong and Flender during the confrontation. Yu nevertheless continues to blame Spirit Hall for those deaths and later hopes to approach the Clear Sky Sect through Tang San. 166 192 251 285 286 287 288 310 312 |
• Yu Yuanzhen — Yu's father and the Thunder Douluo of the Blue Lightning Tyrant Dragon Clan. Yu's involvement with the Clear Sky Sect and Seven Treasure Glazed Tile Sect against Spirit Hall alarms Yu Yuanzhen, who repeatedly physically disciplines him. Despite this conflict, Yu later considers relying on his father's clan for protection from Brother Scar and Brother Jie. Yu Yuanzhen also condemns the publication of Ring Detonation but intervenes to prevent Tang San from mutilating his son, suffering severe injuries in the resulting battle. His later death at Bibi Dong's hands removes Yu's remaining family protector. 192 193 236 250 285 287 288 310 312 |
• Flender — An old friend and collaborator who brings Yu to Shrek to help train its students. Their relationship deteriorates when Flender defends Liu Erlong against Yu's harsh treatment, prompting Yu to accuse Flender of ruining his life. Despite his resentment, Flender helps protect Yu during the Clear Sky inheritance confrontation and participates in the Golden Sacred Dragon fusion. Tang Xiao fatally injures him after he attacks in grief over Liu Erlong's death. 83 84 246 250 287 288 295 310 |
• Liu Erlong — She is openly concerned by Yu's missing arm and affectionate toward him. Yu later rejects her concern harshly after his Spirit City ordeal, and her confirmation of Flender's account during their dispute leaves Yu feeling betrayed. Their relationship becomes a public family scandal damaging the Blue Lightning Tyrant Dragon Clan's reputation. She nevertheless attacks Tang San to protect Yu and dies bearing the impact of Tang Xiao's hammer during their fusion. 124 246 250 233 287 288 |
• Xiao Wu — Yu reprimands her over Tang San's injuries, but later reveals that he knows her true identity and provides concealment assistance. He approves of her relationship with Tang San and imagines training their future child into another Titled Douluo. Her concealment is eventually broken during the tournament, exposing her soul beast identity. 83 141 258 |
• Qin Ming — A Shrek graduate who treats Yu with great respect and serves as his assistant after Yu takes leadership of the restructured Shrek team. Qin Ming later adopts Yu's repeated claim that Spirit Hall is responsible for Flender's death, although Tang Xiao killed him. He ignores Yu's warning and rushes toward the sect battlefield seeking revenge, leaving Yu unable to stop him. 115 117 310 |
• Tang Yuehua — Tang Hao's sister and the mistress of Moonlight Pavilion. Yu approaches her with Tang San to establish contact with Tang Xiao and seek stronger protection for his disciple. She recognizes Yu's former relationship with Bibi Dong as a potential route to the Twin Martial Soul cultivation method and agrees to support Tang San's continued stay with him. 157 158 |
• Hu Liena — Bibi Dong's disciple, who openly challenges Yu's demands in Pope Palace and recognizes his attempt to exploit Bibi Dong's former affection. 219 |
• Gui Mei — A Spirit Hall elder who has long disliked Yu and forcibly removes him from Pope Palace after Bibi Dong rejects him. 219 220 221 |
• Brother Scar and Brother Jie — Recurrent captors and exploiters whom Yu blames on Spirit Hall. They continue coercing him through captivity, abuse, and gambling debts, and intend to exploit his theoretical knowledge even after he returns to Heaven Dou City. 150 151 221 226 250 |
• Huyan Bo — An Elephant Armor Sect member who participates in Yu's imprisonment and abuse in Spirit City, enhancing Brother Scar and Brother Jie with his soul skill so that they can beat Yu more severely. 221 226 |
• Yu Tianheng — His nephew, who excitedly recognizes him as Shrek's team leader and expresses concern over his missing left arm. Yu deflects the question by describing the injury as a price paid in pursuit of truth. 114 115 |
• Salas — The Platinum Bishop of Spirit Hall's Heaven Dou branch. Yu asks him to print and distribute the “Eleven Core Competencies” manuscript. Salas initially dismisses Yu's scholarship, then flatters him after recognizing Ring Detonation's value, using the publication to benefit Spirit Hall and provoke conflict among its enemies. 284 285 |
• Ning Fengzhi — An ally who provides Shrek with resources and acquires Canghui Academy's Seven-in-One technique for Yu to study. Yu's failure to secure the Twin Martial Soul method disappoints him. After Yu publishes Ring Detonation, Ning recognizes the danger to the Upper Three Sects' alliance and later intervenes with Chen Xin and Gu Rong to stop the battle at Shrek. 192 233 236 285 288 |
• Yue Guan — A Spirit Hall elder whom Bibi Dong names as the caretaker of the promised Blue Silver Emperor Seed of Life. He later forces Yu to kneel and kowtow three times for his disrespectful presentation of Shrek's forfeiture. 255 256 |
• Zhao Wuji and Shrek's surviving veterans — They blame Yu for the academy's disastrous circumstances and bully him when Yu Yuanzhen is absent. After Yu's father dies, they reject his offer to join an anti-Spirit Hall enterprise, assert their authority over Shrek, and order him to leave. 310 312 |

Story Role / Major Arcs

Nuoding Academy

Yu's encounter with Lin Nuo reignites memories of Bibi Dong and launches his effort to claim Lin Nuo as a disciple. He instead becomes Tang San's mentor and increasingly positions Lin Nuo as Tang San's rival and “whetstone.” 2 5 22

His handling of Tang San's first soul ring establishes the gap between his confident theoretical claims and practical results. Tang San initially accepts his explanations and later regards Yu's lost arm as a debt of gratitude, allowing loyalty to persist despite doubts about his cultivation path. 14 65

Shrek Academy Training

Yu joins Shrek Academy's preparations for the Continental Advanced Spirit Master Elite Tournament, advises on Ma Hongjun's martial soul flaw, and directs combat tactics for the Imperial Fighting Team sparring match. 84 127

After Shrek's restructuring, Yu leads the team with Qin Ming as an assistant and continues to organize its training, personnel, and tournament strategy. 117 203

His family background also becomes part of Shrek's perceived political protection. Flender presents Yu's connection to Thunder Douluo as reassurance to Dai Mubai, while the academy's students and allies increasingly connect Shrek to the Upper Three Sects and Star Luo Imperial Family. 116 166 192

Tang San's Guardian

After Tang Hao entrusts Tang San to him, Yu takes on an increasingly paternal role. He guides Tang San regarding Blue Silver Grass, Immortal Herbs, the Clear Sky Sect, and Lin Nuo's Spirit Hall backing. 136 140 156

Yu later identifies Tang San's damaged cultivation as a problem requiring the Twin Martial Soul cultivation method, making access to Bibi Dong and her knowledge central to his plans. 177 192 209

As Tang San begins openly questioning his competence, Yu becomes increasingly reliant on the secret manuals Tang Hao entrusted to him and on the promise of eventually restoring Tang San's dependence. 236 251 259

The relationship ultimately breaks completely when Tang San learns that Yu withheld the Clear Sky inheritance and published Ring Detonation under his own name. Yu's paternal rhetoric and last-minute offer of the Great Sumeru Hammer fail to prevent violent retaliation. 284 286 288

Failed Journey to Martial Soul City

Yu leaves Tiandou City intending to demand resources and Twin Martial Soul knowledge from Bibi Dong through their former relationship. Before reaching Martial Soul City, he is drugged, abducted, and assaulted by Brother Scar and Brother Jie. 141 143

The incident drives Yu to blame Spirit Hall, seek closer cooperation with the Clear Sky Sect, and become increasingly dependent on Tang San as the means to restore his status. 151 157 166

Spirit City Confrontation and Captivity

Yu finally reaches Spirit City during the tournament finals and attempts to pressure Bibi Dong into giving him Immortal Herbs, Twin Martial Soul secrets, advanced ring-absorption methods, and resources for Luo Sanpao. His proposed reconciliation and subsequent threats instead lead to his expulsion from Pope Palace. 219 220

Following his removal, Angel Legion Soul Saints, Brother Scar, Brother Jie, and Huyan Bo repeatedly imprison and abuse him. Yu conceals the full extent of this humiliation after returning to Shrek, but his failure to bring back the cultivation method leads to further punishment by Yu Yuanzhen and the collapse of Tang San's remaining respect for him. 221 226 236

Tournament Finals and Seven-in-One Fusion

Yu regains a degree of relevance by refining the Seven-in-One Fusion Skill and teaching it to Shrek. The formation temporarily elevates Tang San's power to simulate a Tool Soul Avatar, allowing Yu to present the match against Lin Nuo as proof that his theories remain valuable. 244 251 257

His apparent tactical success does not repair his authority over Tang San. Yu continues to view Shrek's victories and Tang San's future growth primarily as paths to his own renown and leverage. 251 257 259

His attempt to manipulate the tournament bracket through forfeiture fails when Lin Nuo follows the same course. The subsequent match exposes the limits of Shrek's fusion, as Lin Nuo restricts Tang San with gravity rather than confronting the Clear Sky Hammer directly. Xiao Wu's exposure and the ensuing conflict prevent Yu from realizing his expectations of tournament triumph. 255 256 258 264

Eleven Core Competencies and Clear Sky Inheritance

After the tournament, Yu turns Tang Hao's entrusted Ring Detonation method into a claimed scholarly achievement. Salas publishes and distributes the expanded “Eleven Core Competencies of Martial Soul,” restoring Yu's fame while giving Spirit Hall access to a valuable technique and an opportunity to fracture the Upper Three Sects. Yu retains the Great Sumeru Hammer separately as leverage over Tang San. 284 285

Tang San and Tang Xiao learn the truth through Tang Hao's final message and the public manuscript. Their confrontation with Yu escalates when Yu Yuanzhen intervenes to protect him. The dispute turns into a battle between the two sect leaders, with Flender, Liu Erlong, and Yu reforming the Golden Sacred Dragon to survive the attacks. 284 286 287

Destruction of the Golden Iron Triangle

Tang Xiao's attack kills Liu Erlong, ending the fusion, and he fatally injures Flender after Flender retaliates. Tang San exploits the collapse of Yu Yuanzhen's protective Soul Power to bind and castrate Yu. Ning Fengzhi's intervention prevents further escalation but does not repair the destroyed relationships or restore Yu's fusion power. 288 295 310 312

The deaths leave Yu dependent on his father and isolated among Shrek's surviving staff. His repeated insistence that Spirit Hall is the true cause of Flender's death also influences Qin Ming's subsequent revenge attempt. 310

Sect Destruction and Proposed Resistance Alliance

Spirit Hall's attacks destroy the Blue Lightning Tyrant Dragon Clan, and Bibi Dong kills Yu Yuanzhen. The news deprives Yu of his last major protector and intensifies his hatred of Bibi Dong and Spirit Hall. 310 311 312

Yu imagines uniting the Clear Sky Sect, Star Luo Empire, and Sea God Island, but recognizes that his low cultivation and lack of standing make direct approaches impractical. He therefore plans to use Tang San as his initial connection despite their broken relationship. His effort to recruit an escort from Shrek fails when Zhao Wuji and the surviving veterans reject him and order him out of the academy. 312

Trivia

• Yu's confidence in his theories persists even when Tang San begins privately doubting his assessment of Blue Silver Entangle. 14
• He is irritated by Lin Nuo's rapid cultivation and considers intervening to “guide” him despite Lin Nuo's earlier refusal. 124
• He sees Lin Nuo's later martial soul evolution as a challenge to his understanding of cultivation and martial souls. 140
• Yu consistently uses his remaining right hand behind his back while posing as an inscrutable theorist. 115 123
• He is convinced that Bibi Dong will provide him with the Twin Martial Soul cultivation method because of their past connection, despite repeated evidence that this confidence is misplaced. 141 192 209
• Yu privately intends to make Tang San perform three kneelings and nine kowtows before providing him with the cultivation methods Yu hopes to acquire. 209
• Angel Legion Soul Saints identify Yu by the alias “Rose,” which he appears desperate to keep from defining his public image. 220 221
• Yu's repeated failures to obtain the Twin Martial Soul cultivation method lead Tang San to address him internally and openly as “Gangzi” rather than “Teacher.” 204 236
• His desired title of “Dragon God Douluo” reflects his ambition to evolve Luo Sanpao into a true Golden Sacred Dragon, not an attained cultivation rank. 127 140
• He once imagines that Tang San, Xiao Wu, and their future child could allow his “Yu Sect” to produce three Titled Douluos in one generation. 83
• His eleventh published theory is an authentic Clear Sky technique falsely presented as his own research, rather than an independently developed advancement. 284 285
• Despite repeatedly invoking “a teacher for a day, a father for life,” he is eventually attacked and castrated by the disciple whose future success he hoped would secure his fame. 251 286 288