Master

Biodata

Feature	Value
Name	Yu Xiaogang
Alias(es)	Master
Gender	Male
Affiliation	Nuoding Academy; Shrek Academy; Golden Iron Triangle
Occupation/Role	Spirit Soul Theory expert; Soul Master instructor; mentor of Shrek Academy students
First Appearance	Chapter 1

Power Progression

Stage / Realm / Level	Chapter	Notes
Soul Grandmaster limitation	112	Flender notes that Master had faced the prospect of remaining a Soul Grandmaster for life before Xiao Xian's appearance changed that possibility.
Soul Elder, level 36–37	120	His Soul Power progresses rapidly; alongside Flender and Liu Erlong, his Martial Soul Fusion Skill becomes extraordinarily formidable.
Titled Douluo-level fusion combat strength	125	Through the Golden Iron Triangle's fusion, Master is described as possessing combat strength at the Titled Douluo level.

Background

Yu Xiaogang is a direct descendant of the Blue Lightning Tyrant Dragon Clan and the uncle of Yu Tianheng. His weak and mutated Luo San Pao Martial Soul led to ridicule from both his family and the Spirit Soul Theory community; he was also expelled from Spirit Hall. 20 30 86 87

At Nuoding Academy, he accepted Xiao Xian as his first disciple after the six-year-old demonstrated that his external Martial Soul could meditate independently. Master supplied Xiao Xian with food, medicinal-bath prescriptions from the Blue Lightning Tyrant Dragon Clan, advanced meditation methods, theoretical knowledge, a Martial Soul Hall token, and access to a Soul Ancestor who could help obtain a suitable first Soul Ring. 1

Master later accepted Tang San after identifying the extraordinary implications of his Innate Full Soul Power and Blue Silver Grass Martial Soul. He introduced Tang San to Xiao Xian as his junior disciple and immediately sought confirmation of Tang San's second Martial Soul. 7 8

After joining Shrek Academy, Master assumed responsibility for the students' training. He adopted the Black Robes' competitive ranking system, emphasized unity, and designed specialized training around the students' individual strengths. 59 61 63

Master eventually sought Bibi Dong's knowledge on overcoming the obstacle of Twin Martial Souls for the sake of one of his disciples, setting aside his pride despite their complicated past. 156

Appearance

Master is an ordinary-looking middle-aged man with a dejected aura and an often stiff expression. 1

• Hair parted in a three-seven style. 1
• Usually maintains a stern, restrained demeanor. 1 156
• His expression becomes visibly animated when discussing promising Martial Soul research or his disciples' achievements. 7 57

Personality

Master is driven by Spirit Soul Theory and by a personal need to prove that neither he nor his research are worthless. Tang San's Blue Silver Grass and possible Twin Martial Souls excite him because they offer a chance to validate his theories about unusual Martial Souls. 7 20

He is sincerely devoted to his disciples. He invests his resources in Xiao Xian's development, cares for Tang San after his apprenticeship, and later seeks to establish Xiao Xian's unquestioned standing within the Shrek team by cultivating powerful allies around him. 1 57 61

His protectiveness can become anxiety and guilt. He initially opposes Xiao Xian's attempt to absorb a Ten-Thousand-Year Fourth Spirit Ring, regrets exposing Xiao Xian to danger, and later believes he may have made better choices by taking Xiao Xian to Spirit Hall earlier. 106 161

Abilities & Skills

Spirit Soul Theory

Master is presented as a foremost expert in Spirit Soul Theory and author of the Ten Core Competencies of Martial Souls. 59

• Selects Soul Rings according to long-term development rather than immediate power; his analysis enabled Xiao Xian to obtain the four-hundred-year Sunlight Blood Dragon Vine ring at age seven. 1
• Provides advanced Soul Power meditation methods and theoretical knowledge on Soul Beasts. 1
• Identifies the potential importance of Tang San's Blue Silver Grass and Twin Martial Souls. 7 8
• Studies Martial Soul Fusion Skills and the Golden Sacred Dragon's formation principles. 111

Instruction and Training

Master tailors training plans to his students rather than applying a uniform method. 59 62

• Takes charge of Shrek Academy's training and stresses cooperation as well as competition. 59
• Establishes internal ranking matches and links later rankings to both strength and training completion. 63
• Supports Xiao Xian's plan to pass Self-Created Soul Skills to his teammates while seeking a solution to the side effects of Sunlight Spores. 62
• Organizes daily sparring for the tournament team to build familiarity with each member's abilities. 126

Sun Moon Shining Together Golden Turn

Master is part of the Golden Iron Triangle's Martial Soul Fusion Skill with Flender and Liu Erlong. 106 120

• The fusion transforms Luo San Pao into a golden dragon for battle. 107
• Its power rises dramatically as Master's Soul Power grows and as Flender and Liu Erlong support the fusion. 120
• Master teaches Xiao Xian the Golden Triangle Formation and attempts to have Xiao Jue inherit the fusion technique as a means of protecting Xiao Xian. 111 112

Equipment / Items

• Martial Soul Hall token — enabled Xiao Xian to enter the guarded Soul Hunting Forest. 1
• Blue Lightning Tyrant Dragon Clan prescriptions — used for Xiao Xian's regular body-tempering medicinal baths. 1
• Spirit Soul Theory materials — include records on Martial Soul Fusion Skills and the Golden Sacred Dragon. 111
• Soul Tool — carries personal items, including a towel used after drinking with Flender. 110

Relationships

• Xiao Xian — Direct disciple and Master's foremost hope. Master provides the resources that begin Xiao Xian's growth, later builds Shrek's training around strengthening Xiao Xian's position and worries deeply over the dangers his disciple faces. 1 61 161
• Tang San — Direct disciple and Xiao Xian's junior brother. Master accepts Tang San after recognizing his exceptional potential and continues to guide his development. 7 8 156
• Flender — Sworn elder brother and Golden Iron Triangle partner. Flender supports Master's decisions concerning Xiao Xian, while the two jointly oversee Shrek Academy. 59 89 111
• Liu Erlong — Sworn younger sister and Golden Iron Triangle partner. Her participation is essential to the Triangle's Martial Soul Fusion Skill, though Master's relationship with her remains emotionally complicated. 89 106 112
• Bibi Dong — A figure from Master's past. He approaches her directly to request information about Twin Martial Soul cultivation despite the pain and tension between them. 156
• Yu Tianheng — Nephew. Master confronts Yu Tianheng's arrogance and reveals that the Black Robe Team's captain is his own disciple. 86 87
• Xiao Jue — Xiao Xian's external Martial Soul. Master feeds it, studies its potential, and teaches it the principles behind the Golden Iron Triangle's fusion technique. 61 111

Story Role / Major Arcs

• Nuoding Academy mentorship — Becomes Xiao Xian's benefactor and teacher, then accepts Tang San as his second disciple. 1 8
• Shrek training leadership — Takes over student training, formalizes the Black Robes' ranking system, and builds a team intended to support Xiao Xian. 59 61 63
• Golden Iron Triangle revival — Works with Flender and Liu Erlong to use and expand their Martial Soul Fusion Skill, including teaching its principles to Xiao Xian and Xiao Jue. 106 111 112
• Elite Competition strategist — Sets the tournament team's training, sparring requirements, lineups, and tactical expectations. 126 128 161
• Spirit Hall appeal — Visits Bibi Dong to seek a solution for Twin Martial Soul cultivation, accepting the personal cost for his disciple's future. 156
• Protector of Xiao Xian — Continues to blame himself for Xiao Xian's exposure to assassination and political danger, even as Xiao Xian reassures him. 161

Notable Quotes

“My strength truly isn't great. But that doesn't mean I can't teach an outstanding disciple.” 87

“Perhaps, back in Suotuo City, I should have brought you directly to Spirit Hall.” 161