Yu Xiaogang

Biodata

Feature	Value
Name	Yu Xiaogang
Alias(es)	Master; Grandmaster
Gender	Male
Affiliation	Notting Academy; Shrek Academy; Blue Lightning Tyrant Dragon Clan by birth
Occupation/Role	Soul master theorist; Tang San's teacher; instructor of the Shrek Seven Devils
Martial Soul	Luo Sanpao
Cultivation	Formerly Rank 29; falls to single-digit levels after his failed breakthrough, with no confirmed restoration of his former rank. 133 135
Status	Alive; physically debilitated, with partial medicinal recovery later aggravated by Bibi Dong's pressure. 164 168
First Appearance	3

Power Progression

Period	Development
Before the Breakthrough Attempt	Remains stalled at Rank 29 for decades because of the flawed meridians and mutation of Luo Sanpao, despite his extensive theoretical knowledge. 123 133
Immortal Herb Preparation	Accepts Tang San's Nine-Grade Purple Ganoderma and a modified Mysterious Heaven Skill circulation method in hopes of repairing his foundation and breaking through the Rank 30 bottleneck. 123 132
Attempted Breakthrough	The ganoderma initially repairs his meridians and causes Luo Sanpao to develop purple scales, apparently confirming the possibility of a beneficial mutation. 133
Technique Backlash	Hidden mental toxin and destructive spider energy trigger an illusion and qi deviation during his third circulation. His heart meridians rupture, Luo Sanpao's nascent mutation collapses, and he is left near death. 133 134
Post-Backlash Cultivation Collapse	Examination finds roughly seventy percent of his main meridians severed, a dantian unable to retain Soul Power, and severe damage to Luo Sanpao's foundation. His cultivation falls to single-digit levels. 135
Early Tournament Condition	A concealed life force preserves his damaged heart meridian without restoring it. Though wheelchair-bound and unable to fight, he remains capable of analyzing opponents, advising Tang San, and directing Shrek's preparations. 136 146 148
End of the Preliminaries	His condition visibly stabilizes, but his meridians and Martial Soul foundation remain unrepaired. The Seven Treasure Glazed Tile Sect supplies an eight-thousand-year Purpleheart Vine and a six-thousand-year Jade Bone Flower; Ji Yuan intercepts most of their vitality, allowing only modest improvement. 152
Advancement Tournament Treatment	Two Meridian-Restoring Grasses provided by Emperor Xue Ye improve his damaged meridians. Ji Yuan again absorbs most of the medicinal vitality, leaving enough for partial healing but no confirmed cultivation-rank recovery. 164
Pope Hall Setback	Bibi Dong's Soul Power pressure aggravates his damaged meridians. Ji Yuan intercepts the lingering Rakshasa death qi, which would otherwise have fatally damaged his heart meridians. Yu Xiaogang remains wheelchair-dependent and continues directing finals preparations. 168 170

Background / History

Yu Xiaogang intervenes when Tang San is blocked from entering Notting Academy, arranges his enrollment, and becomes interested in the unusual combination of Blue Silver Grass and innate full soul power. He explains that he wants to understand why Tang San possesses such an abnormal martial soul configuration. 3

He accepts Tang San as a disciple despite his own reputation for theoretical knowledge rather than practical strength. Tang San chooses him because Yu Xiaogang recognized that Blue Silver Grass could still have a viable cultivation path. 4 5

Yu Xiaogang prepares Tang San for his first soul-ring hunt by teaching him the Ten Core Competencies of Martial Souls, assigning him an illustrated soul-beast guide, and leading him into Soul Hunting Forest. 5 6

During preparations for the Soul Hunting Forest expedition, Ji Yuan covertly places an offspring spore in Yu Xiaogang's clothing. Yu Xiaogang remains unaware of the parasite and its later role in Ji Yuan's information network. 6

After Tang San's recurring soul-power depletion worsens, Yu Xiaogang concludes that the overbearing Clear Sky Hammer is consuming power needed by Blue Silver Grass. He arranges a journey toward Star Dou Great Forest in search of stronger life force and a more suitable soul ring to stabilize Tang San's mutation. 29 30

At Shrek Academy, Yu Xiaogang investigates the heating jade pieces of Tang San's Twenty-Four Moonlit Bridge and their reaction to a poisoned silver needle. He advises Tang San not to interfere with the belt's internal space while his Soul Power is unstable. After the battle against Crazy Team, he detects the opponents' Frenzy aura in Tang San's meridians and considers unusual absorption through the mutated Blue Silver Grass as a possible explanation. 52 53 54

Yu Xiaogang later resumes direct oversight of Tang San after the students return from Star Dou Great Forest. He identifies Tang San's Eight Spider Lances as an External Soul Bone and assumes responsibility for training the Shrek Seven Devils. 82 83 84

When Dugu Bo comes to Shrek Academy to seize Tang San after the Soul Battle with Emperor Team, Yu Xiaogang attempts to protect his disciple with a Spirit Hall Honorary Elder token and invokes his connection to the Blue Lightning Tyrant Dragon Clan. Dugu Bo dismisses both forms of leverage and proceeds to take Tang San. 101

During that confrontation, Yu Xiaogang explicitly identifies the Blue Lightning Tyrant Dragon Clan's patriarch as his father. His family origin contrasts with his reputation as the clan's abandoned son and his inability to overcome the Rank 29 bottleneck. 101 133

After Tang San returns with immortal herbs from the Ice and Fire Yin Yang Well, Yu Xiaogang receives a Nine-Grade Purple Ganoderma intended to repair Luo Sanpao's defective foundation and help him overcome his Rank 29 bottleneck. He initially hesitates but accepts Tang San's gift and supervises the other Shrek students' herb absorption. 123 132

Driven by the desire to prove that Luo Sanpao can mutate beneficially and to break through before the tournament, Yu Xiaogang cultivates alone with the ganoderma and Tang San's altered Mysterious Heaven Skill route. Although the herb initially repairs his meridians and produces purple scales on Luo Sanpao, a hidden mental toxin and destructive force trigger a catastrophic backlash that destroys the developing mutation and ruptures his heart meridians. 133 134

The sabotage originates from Ji Yuan, who contaminates the ganoderma with Remnant Dream toxin and the Man Faced Demon Spider's violent power. Yu Xiaogang and Tang San do not discover this interference and instead suspect the modified cultivation route. The resulting injuries sever roughly seventy percent of Yu Xiaogang's main meridians, prevent his dantian from retaining Soul Power, and reduce his cultivation to single-digit levels. Tang San destroys the blood-soaked formula to prevent its reuse. 132 134 135

Yu Xiaogang survives only because an unexplained life force intermittently sustains his damaged heart meridian. He remains critically ill during Shrek Academy's journey to Heaven Dou City, but continues instructing Tang San to seek medicinal treasures through academies, sects, and imperial connections while closely monitoring the students' unstable post-herb transformations. 136 138

By the Heaven Dou Tournament, Yu Xiaogang is transported in a wheelchair and remains physically frail. He nevertheless resumes tactical work, including analyzing Blazing Fire Academy's formation and examining Tang San after Huo Wu's Ring Fusion attack. 146 148

He subsequently helps Tang San analyze Feng Xiaotian's consecutive slashes and warns that the final accumulated strike is the most dangerous. When Tang San reveals the Clear Sky Hammer and publicly exposes his Twin Martial Souls, Yu Xiaogang orders the entire team to leave the arena together before interested factions can surround or detain his disciple. 149 150 151

After Shrek finishes the preliminaries in first place, Yu Xiaogang receives treatment with rare herbs supplied by the Seven Treasure Glazed Tile Sect. His physical condition improves modestly, but his foundation remains damaged. He warns Tang San that Spirit Hall's knowledge of his identity creates dangers beyond the arena. 152

Following Salas's presumed death, Yu Xiaogang discourages further investigation that might expose Tang Hao or endanger Shrek Academy. He redirects the students toward the Advancement Tournament's individual elimination format and continues advising them from his wheelchair. During the tournament, he interprets Tang San's suppression of Plant Academy as evidence that the enhanced Blue Silver Grass has gained rank or bloodline superiority over ordinary plant Martial Souls. 158 164

Emperor Xue Ye supplies two Meridian-Restoring Grasses through Tang San, allowing further partial repair of Yu Xiaogang's meridians. Ji Yuan secretly consumes most of their vitality, just as he intercepts the earlier sect-provided medicine. Yu Xiaogang remains too weak for prolonged riding and travels toward Spirit City in a cushioned carriage. 152 164 165

He survives the gorge ambush by Yue Guan and Gui Mei and is carried from an overturned carriage afterward. Recognizing that Spirit Hall is willing to attack openly, he warns that the situation will become even more dangerous in Spirit City and prepares his Papal Decree. 166

In Spirit City, Yu Xiaogang seeks Bibi Dong's information on cultivating Twin Martial Souls. She refuses, aggravates his injuries with Soul Power pressure, and tells him that Tang San must die. He conceals the lethal threat from his disciple to prevent distraction or a premature confrontation, then intensifies Shrek's training and shifts its focus toward coordinated Soul Power transmission. 168

Yu Xiaogang develops a seven-person transmission formation intended to concentrate the team's Soul Power into Tang San's Clear Sky Hammer. He theorizes that temporarily reaching Rank 70 through borrowed power could permit Weapon Soul True Body. Despite dangerous transmission losses and Tang San's meridian strain, a subsequent practice attempt successfully manifests the enlarged hammer, which Yu Xiaogang orders dispersed before it can endanger the surroundings. 169 170

Personality

Yu Xiaogang is serious, analytical, and deeply invested in proving and applying his theories. He emphasizes preparation, survival, and selecting soul rings that suit a martial soul rather than recklessly pursuing higher age limits. 5 7

He is genuinely protective of Tang San, repeatedly warns him against overexertion, and accepts responsibility when his own judgment proves inadequate. 7 12 25

His confidence in theoretical explanations can also become a blind spot. He repeatedly attributes Tang San's unexplained weakness, lost power, and nearby soul-power drain to conflict between Tang San's twin martial souls, unknowingly providing cover for Ji Yuan's parasitism. 8 13 21 24 25

Yu Xiaogang is willing to challenge and revise his earlier conclusions when Tang San's condition develops beyond ordinary twin-martial-soul theory. However, he continues to fit increasingly unusual evidence—including venomous shed tissue, plant-related phenomena, and the Eight Spider Lances' devouring behavior—into his evolving theory of martial-soul rejection. 48 83 84 90 92

He is demanding but impartial as an instructor. His training requires even support-system soul masters to push through physical exhaustion, and he treats endurance, judgment, coordination, and teamwork as essential parts of cultivation. 85 86

Yu Xiaogang's normally restrained demeanor becomes visibly affected by matters involving the Blue Lightning Tyrant Dragon Clan. He particularly wants Shrek Academy to defeat Yu Tianheng, though he avoids discussing the full nature of their family connection. 94

Yu Xiaogang's long stagnation at Rank 29 has left him deeply sensitive to ridicule concerning his strength and Luo Sanpao. His need to personally validate his theories and escape that humiliation causes him to ignore Tang San's cautions during the ganoderma cultivation attempt. 123 133

Even while incapacitated, he prioritizes his students' futures over his own safety. After briefly regaining consciousness, he insists that Shrek Academy continue toward the tournament and directs Tang San to seek every possible source of medicine and information. 136

He distinguishes victory from worthwhile risk. During the Emperor Team battle, he would rather concede than let Tang San endanger his life with an unstable External Soul Bone. Even as the championship becomes a means of securing his own treatment, he tells Tang San that returning alive matters alongside winning. 96 99 149

Under the pressure of Spirit Hall's hostility, his protective instincts become more secretive and severe. He conceals Bibi Dong's intention to kill Tang San and doubles training despite Flender's objections, believing strength is necessary for survival. Nevertheless, he insists that students sever dangerous Soul Power connections rather than force themselves beyond endurance, even if doing so could cost the final. 168 169 170

He shares responsibility for the failed cultivation method with Tang San rather than treating his disciple solely as its cause. Their mutual guilt and commitment to recovery deepen their teacher-disciple bond while leaving Ji Yuan's sabotage undiscovered. 152

Abilities & Skills

Martial Soul Theory

Yu Xiaogang possesses extensive knowledge of martial souls, soul rings, soul beasts, toxin tolerance, and cultivation risks.

• Teaches that Blue Silver Grass should develop through toughness, poison, and control. 4
• Explains that soul rings must complement their martial soul and that excessive ring age can be fatal without adequate physical endurance, mental resilience, and compatibility. 5
• Identifies the Datura Snake as a suitable control-type soul beast for Blue Silver Grass, while cautioning against an excessively old specimen. 5 7
• Diagnoses and monitors Tang San's unstable condition through the framework of twin-martial-soul conflict. 13 21 25
• Determines that Tang San's Eight Spider Lances are an External Soul Bone capable of growing with its host. 82 83
• Formulates the theory of advanced rejection between Tang San's twin martial souls and External Soul Bone, restricting Tang San's use of the Clear Sky Hammer and Eight Spider Lances accordingly. 83 84
• Explains the apparent replenishment of Dai Mubai's vitality as Blue Silver Grass using its life attribute to compensate for damage caused by the External Soul Bone's rejection. 92 93
• Recognizes that the Eight Spider Lances can evolve when exposed to different energies, including White Tiger origin, Blue Lightning Tyrant Dragon lightning, and Remnant Dream spiritual power. 129
• Concludes that the Shrek students' post-herb weakness and dependence on Tang San's Blue Silver Grass are a temporary Shared-Origin Resonance caused by rapid martial-soul evolution outpacing their physical foundations. 131 132 141
• Identifies Ning Rongrong as highly compatible with Shi Nian's illusion-type Head Soul Bone because advanced Seven Treasure Glazed Tile Pagoda support requires substantial spiritual power and Heart Separation Control. 129 132
• Analyzes Blazing Fire Academy's all-fire lineup, identifying Huo Wu's control role, Huo Wushuang's assault threat, and the disruption created by Huo Wu's Resisting Fire Ring. 146
• Attributes Tang San's suppression of Plant Academy's Martial Souls to the combined enhancement of a Ten Thousand Year Soul Ring and the Infernal Delicate Apricot and Octagonal Mysterious Ice Grass. He interprets it as plant Martial Soul rank or bloodline suppression, unaware that Ji Yuan's Ambrosial Arbor is the true source. 164
• Theorizes that borrowed Soul Power from all seven Shrek students could temporarily push Tang San toward Rank 70 and enable the Clear Sky Hammer's Weapon Soul True Body. 169

Luo Sanpao

Luo Sanpao is Yu Xiaogang's manifested Martial Soul. Its defective foundation and meridian structure prevent his long-standing progression beyond Rank 29. The ganoderma initially produces a promising mutation, but the subsequent backlash destroys that development and severely damages its foundation. 7 133 134 135

• Assists with campsite inspection during the Soul Hunting Forest expedition. 7
• Releases a thunder-like gas attack under the command “Fart like thunder, Heaven-Shattering Earth-Rending Luo Sanpao!” to repel attacking Netherworld Wolves. 8
• Uses poisonous gas against further wolf attacks, though defending one direction leaves openings elsewhere. 8
• Develops purple scales during the initial beneficial response to the Nine-Grade Purple Ganoderma before the mutation collapses. 133

Soul Beast Identification and Fieldcraft

Yu Xiaogang applies his research in Soul Hunting Forest and prioritizes controlled, cautious hunting.

• Carries supplies including antidotes, medicine, and snake-repelling powder. 6 7
• Uses Luo Sanpao to inspect campsites. 7
• Recognizes wolf-pack behavior and advises Tang San not to chase retreating enemies. 8
• Insists that surviving takes priority over quickly obtaining a soul ring. 7
• Assesses the age, patterns, and risks of the Man Faced Demon Spider soul ring absorbed by Tang San, recognizing that its age exceeded the usual third-ring absorption limit. 82
• Recognizes that the Man Faced Demon Spider's bloodthirsty nature may influence Tang San's External Soul Bone. 90

Examination and Treatment

Yu Xiaogang examines Tang San’s martial souls, meridians, and soul-power fluctuations, and provides medicine and blood-qi-replenishing herbs.

• Treats Tang San's symptoms as the backlash and imbalance of twin martial souls. 13 21
• Investigates the academy-wide soul-power depletion with a soul power detector. 24 25
• Stops his examination after it causes Tang San to collapse, admitting his judgment was not steady enough. 25
• Supplies Tang San with medicinal powder and replenishing herbs afterward. 21 25
• Attributes Tang San's later black-blood episodes and shed tissue to residual Datura Snake venom being expelled through his mutated Blue Silver Grass. 48
• Requires examinations before and after Tang San's cultivation sessions and temporarily limits him to team battles rather than private one-on-one Soul Fighting matches. 51
• Investigates the Twenty-Four Moonlit Bridge's reaction to a poisoned silver needle and cautions Tang San against disturbing its internal space. 52 54
• Detects Crazy Team's Frenzy aura in Tang San's meridians after their match and orders a halt to cultivation pending further examination. 53 54
• Examines the interaction of Tang San's Clear Sky Hammer and Eight Spider Lances, identifying blood-and-qi deficiency and apparent internal rejection. 82 83 87
• Oversees Dai Mubai's recovery after the Eight Spider Lances drain part of his White Tiger origin, prescribing daily circulation with Tang San's Blue Silver Grass to stabilize Dai Mubai's meridians. 90 93
• Records Tang San's lightning-damaged left-arm meridians after the Emperor Team battle and forbids Soul Power use and release of the Eight Spider Lances for several days. At that stage, he interprets the lances' electrical glow as unresolved attribute conflict rather than confirmed evolution. 99 100
• Examines Tang San after Huo Wu's Ring Fusion and determines that his meridians were not scorched, attributing his survival to resistance to ice- and fire-attributed power within his body. 148
• Monitors Tang San's left-arm strain during seven-in-one training, restricts repeated attempts, and orders the enlarged Clear Sky Hammer dispersed once the transmission succeeds. 170

Training and Tactical Instruction

After assuming command of the Shrek Seven Devils' training, Yu Xiaogang develops their physical endurance, coordination, and team discipline.

• Assigns weighted bamboo baskets according to each student's martial soul path and physical condition. 85
• Requires the students to complete repeated runs between Shrek Academy and Suotuo City without Soul Power or discarded weight. 85 86
• Records the students' conditions and encourages them to exceed the premature exhaustion signals of their bodies without relying on external support. 86
• Permits Tang San to share newly learned force-exertion methods with the group, valuing technique and coordination alongside brute strength. 86
• Analyzes Emperor Team's composition and identifies the high Soul Power expenditure of Yu Tianheng's Thunderous Fury as a possible weakness. 94
• Warns Tang San that Blue Lightning Tyrant Dragon lightning inherently restrains Blue Silver Grass and forbids use of the Eight Spider Lances in the coming Soul Battle. 94
• Establishes sparring restrictions against soul skills and the Eight Spider Lances to force the students to develop fundamentals, teamwork, and judgment under pressure. 87 88
• Continues providing tournament analysis from his wheelchair despite his critically damaged meridians. 146
• Warns that Feng Xiaotian's consecutive attacks accumulate speed and power, making the final strike his true killing move. During the match, he reminds Tang San to identify the opponent's rhythm and borrow force through the Disorder Splitting Wind Hammer. 149 150
• Explains the Advancement Tournament's individual elimination rules and cautions that Tang San's exposed Clear Sky Hammer allows opposing academies to study his fighting style. 158
• Warns Shrek not to become complacent near the end of the Advancement Tournament, noting that Godwind Academy retains strength without Feng Xiaotian and Thunderclap Academy still has several main fighters. 164
• Doubles training intensity before the finals and shifts the emphasis from individual combat to coordinated Soul Power synchronization. The initial exercise uses thirty-percent output, Ning Rongrong's amplification, and Tang San's Blue Silver Grass connections. 168
• Designs the seven-in-one transmission formation, placing Ning Rongrong at the rear as the stabilizing collection core and arranging the others according to their capacity to bear Soul Power. The gathered power is ultimately directed into Tang San's Clear Sky Hammer rather than Blue Silver Grass. 169
• Requires immediate disconnection if any participant cannot endure transmission, even during the final, and supervises the successful practice manifestation of Weapon Soul True Body. 169 170

Cultivation Knowledge

Yu Xiaogang has developed detailed theories concerning Luo Sanpao's defective meridians and beneficial martial-soul mutation, but his attempt to apply them to himself ends disastrously.

• Accepts that the Nine-Grade Purple Ganoderma may strengthen his foundation and allow Luo Sanpao to undergo a beneficial mutation. 123 132 133
• Uses Tang San's modified Mysterious Heaven Skill circulation route while attempting to break through Rank 29. 132 133
• Initially confirms that the herb is repairing blocked meridians when Luo Sanpao develops purple scales and shows no apparent rejection. 133
• Loses control after a mental toxin and destructive power erupt through his heart meridians, causing Luo Sanpao's mutation to collapse and leaving his cultivation foundation severely damaged. 133 134
• Seeks Bibi Dong's method for cultivating Twin Martial Souls, but she refuses to provide it to someone connected to the Clear Sky Sect. 168
• Interprets substantial losses during seven-in-one transmission as incomplete compatibility between Soul Power produced by different cultivation methods. The losses are also secretly increased by Ji Yuan's parasitic interception. 169 170

Equipment / Items

• Twenty-Four Moonlit Bridge — A twenty-four-compartment storage soul tool given to Tang San upon accepting him as a disciple. 3 4
• Illustrated soul-beast guide — Contains soul-beast information and Yu Xiaogang's handwritten notes. 5
• Soul power detector — Used to trace unusual soul-power fluctuations around Notting Academy and examine Tang San's abnormal condition. 24 25 30
• Medicinal supplies — Includes antidotes, treatment powders, and herbs for replenishing blood and qi. 6 21 25
• Research notebooks and records — Used to document Tang San's martial-soul fluctuations, External Soul Bone, the Shrek students' training progress, and the effects of immortal herbs. 30 82 86 93 129 131
• Weighted bamboo baskets — Training implements filled with stones and assigned to the Shrek Seven Devils according to their physical capacity. 85
• Spirit Hall Honorary Elder token — Displayed in an unsuccessful attempt to deter Dugu Bo from taking Tang San. 101
• Nine-Grade Purple Ganoderma — An immortal herb given by Tang San to repair Yu Xiaogang's foundation and help him break through Rank 29; it is consumed during the failed cultivation attempt. 123 132 133
• Wheelchair — Used to transport Yu Xiaogang during the Heaven Dou Tournament after the destruction of his meridians. 146 148
• Poisoned silver needle — Retained for study after its proximity causes an abnormal reaction in Tang San's Twenty-Four Moonlit Bridge. 52
• Bloodstained training notebook and roster — Entrusted to Tang San by Flender after the breakthrough disaster. The roster includes Yu Xiaogang's instruction to lead the Shrek Seven Monsters to the championship. 135
• Purpleheart Vine and Jade Bone Flower — An eight-thousand-year vine and six-thousand-year flower delivered by Ning Rongrong from the Seven Treasure Glazed Tile Sect for his treatment. Ji Yuan intercepts most of their life force. 152
• Meridian-Restoring Grass — Two medicinal grasses provided by Emperor Xue Ye and brewed by Tang San, producing partial meridian repair despite Ji Yuan's theft of much of their vitality. 164
• Papal Decree — Taken from his robes as the convoy approaches Spirit City after the gorge ambush. 166
• Finals intelligence and formation diagrams — Includes information on Spirit Hall's Golden Generation and Yu Xiaogang's proposed seven-person Soul Power transmission arrangement. 168 169

Relationships

• Tang San — Disciple. Yu Xiaogang arranges his enrollment, gives him the Twenty-Four Moonlit Bridge, teaches him martial-soul theory, and guides his first soul-ring hunt. He later identifies Tang San's Eight Spider Lances as an External Soul Bone, imposes restrictions on Tang San's dangerous abilities, and remains committed to treating his increasingly abnormal condition. Tang San later gives him the Nine-Grade Purple Ganoderma and risks his own health trying to save him from its resulting backlash. 3 5 6 82 83 84 123 133 134 Tang San's search for medicine becomes a major motivation behind the tournament campaign, while Yu Xiaogang continues prioritizing his disciple's survival and helps develop the seven-in-one formation for the finals. Both accept responsibility for the failed cultivation route without discovering Ji Yuan's sabotage. 135 149 152 169 170
• Xiao Wu — Tang San's protective friend. She frequently challenges Yu Xiaogang when she believes his examinations or explanations have endangered Tang San. Although their relationship remains tense, Yu Xiaogang recognizes her concern and includes her in Tang San's care and Shrek's training. 13 21 25 30 84
• Luo Sanpao — Accompanies Yu Xiaogang during the Soul Hunting Forest expedition and assists in checking their campsite. Luo Sanpao's damaged and mutated meridians are the central obstacle to Yu Xiaogang's Rank 30 breakthrough attempt. 7 133 134
• Matthew Nuo — Spirit Hall deacon who acknowledges that Yu Xiaogang's theories are not entirely empty after learning Tang San's Datura Snake soul ring was chosen by him. 16
• Su Yuntao — Spirit Hall representative who disparages Yu Xiaogang's strength and theoretical standing while trying to recruit Tang San. 17
• Flender — Shrek Academy's dean and Yu Xiaogang's associate. Flender supports Yu Xiaogang's evaluation of Tang San's External Soul Bone, though he challenges Yu Xiaogang when Dai Mubai is severely injured. He later attempts to save Yu Xiaogang after the ganoderma backlash and helps organize Shrek Academy's journey while Yu Xiaogang is incapacitated. 82 83 90 133 134 136 Before the finals, he objects to Yu Xiaogang's intensified training because the students are still recovering from the gorge ambush. 168
• Zhao Wuji — Shrek Academy teacher. Zhao Wuji initially questions Yu Xiaogang's explanations for Tang San's abnormalities, but relies on his knowledge of External Soul Bones and training management. He later helps restrain Tang San when the rescue attempt for Yu Xiaogang becomes dangerous and transports Yu Xiaogang during the tournament. 48 82 90 134 148
• The Shrek Seven Devils — Yu Xiaogang becomes their principal instructor, enforcing demanding physical training and guiding their tactical preparation for team Soul Battles. He also oversees their immortal-herb absorption and warns them against reckless cultivation while their martial souls remain unstable. 84 85 94 123 136 He subsequently prepares them for individual elimination battles and seven-in-one Soul Power transmission, stressing both victory and the need to interrupt dangerous connections. 158 168 169 170
• Dai Mubai — Student under Yu Xiaogang's training. Following Dai Mubai's injury from Tang San's uncontrolled Eight Spider Lances, Yu Xiaogang defends Tang San from accusations of deliberate harm, accepts partial responsibility for the training arrangement, and supervises Dai Mubai's recovery. 90 93
• Zhu Zhuqing — A Shrek student who remains suspicious that Tang San may be parasitized by an unknown plant-like entity. Yu Xiaogang repeatedly rejects her suspicions in favor of his martial-soul-rejection theory. 48 75 84 90
• Ning Rongrong — Shrek student whose Nine Treasure Glazed Tile Pagoda evolution Yu Xiaogang studies closely. He endorses Tang San's decision to give her Shi Nian's illusion-type Head Soul Bone and theorizes that her cultivation dependence on Tang San is a temporary Shared-Origin Resonance. 129 131 132 141 She delivers rare medicinal herbs for his treatment and becomes the stabilizing collection core in his seven-in-one formation. 152 169
• Yu Tianheng — A member of the Blue Lightning Tyrant Dragon Clan and Yu Xiaogang's junior by clan. Yu Xiaogang's personal history with the clan motivates his desire for Shrek Academy to defeat Yu Tianheng's Emperor Team. 94 101
• Dugu Bo — A Title Douluo who disregards Yu Xiaogang's Spirit Hall token and clan connection while taking Tang San from Shrek Academy. 101 He later joins Chen Xin in protecting Tang San during the gorge ambush, allowing Yu Xiaogang and the rest of Shrek to survive. 166
• Ning Fengzhi — Seven Treasure Glazed Tile Sect Master who becomes a potential source of medical aid after Tang San seeks rare life-attributed treasures to repair Yu Xiaogang's destroyed meridians. 141 His sect subsequently provides the Purpleheart Vine and Jade Bone Flower used in Yu Xiaogang's treatment. 152
• Emperor Xue Ye — The Heaven Dou Emperor offers medicinal herbs from the imperial treasury to help heal Yu Xiaogang after witnessing Tang San's performance against Blazing Fire Academy. 148 He later gives Tang San two Meridian-Restoring Grasses that partially improve Yu Xiaogang's injuries. 164
• Blue Lightning Tyrant Dragon Clan Patriarch — Yu Xiaogang's father. Yu Xiaogang invokes this connection when attempting to deter Dugu Bo, though it provides no effective protection. 101
• Bibi Dong — Spirit Hall's Pope and a figure from Yu Xiaogang's past. She appears among the people whose ridicule and abandonment he fears during the poisoned ganoderma illusion. 133 When he seeks her Twin Martial Soul cultivation method, she refuses, worsens his injuries through pressure, and declares that Tang San must die. Yu Xiaogang hides that threat from his disciple. Her later confrontation with Tang San revives memories of Yu Xiaogang's earlier refusal to yield and his departure. 168 179
• Liu Erlong — Appears in the toxin-induced illusion that exploits Yu Xiaogang's fears of ridicule, rejection, and abandonment. The vision does not establish that her depicted behavior actually occurred. 133
• Ji Yuan — Hidden parasite and manipulator whose existence Yu Xiaogang does not recognize. Ji Yuan uses Yu Xiaogang as a surveillance point, exploits his theories as cover, sabotages his breakthrough, and then preserves his life while siphoning much of his treatment's medicinal power. Ji Yuan also treats his visit to Pope Hall as an opportunity to carry a Parasitic Poison Seed inside and intercepts the Rakshasa death qi threatening his heart meridians. 6 132 136 152 164 168

Story Role / Major Arcs

Tang San's Enrollment and Apprenticeship

Yu Xiaogang admits Tang San to Notting Academy, accepts him as a disciple, and begins teaching him the principles needed to develop Blue Silver Grass and manage his hidden second martial soul. 3 5

Soul Hunting Forest Expedition

He escorts Tang San into Soul Hunting Forest, establishes camp precautions, confronts the Netherworld Wolf pack and Datura Snake, and is poisoned during the battle. Tang San later supports him while they leave the forest. 7 8 9 11 12

Explaining Tang San's Abnormalities

After Tang San repeatedly loses strength, vomits black blood, and experiences loss of control, Yu Xiaogang attributes the symptoms to conflict between Blue Silver Grass and the Clear Sky Hammer. These explanations strengthen Tang San's trust while concealing Ji Yuan's interference. 13 17 21

Investigation of Notting Academy's Soul-Power Drain

Yu Xiaogang investigates weakened upperclassmen and fluctuations detected around the Seventh Dormitory. Though he suspects Tang San’s abnormal martial-soul state may be involved, he concludes that resonance and twin-martial-soul imbalance are the likely causes. 24 25

Blood Ginseng Incidents

When Tang San is framed through purchases of hundred-year blood ginseng, Yu Xiaogang attempts to protect him and investigate the source. He eventually considers that a parasitic soul beast or special martial soul may be draining medicinal power from a distance, but does not identify Ji Yuan. 26 27

Star Dou Great Forest Proposal

When Tang San's Soul Power remains abnormally depleted and his left hand begins manifesting the Clear Sky Hammer's oppressive aura, Yu Xiaogang concludes that a stronger source of life force is needed. He plans a carefully supplied expedition to the outskirts of Star Dou Great Forest to stabilize Tang San's evolving Blue Silver Grass. 29 30

Residual Venom and Theoretical Reassurance

At Shrek Academy, Yu Xiaogang explains Tang San's black blood, venomous shed tissue, and renewed weakness as delayed Datura Snake venom expulsion compounded by twin-martial-soul conflict. His explanation persuades Zhu Zhuqing to withdraw her immediate accusations and allows Tang San to continue testing himself in the Great Soul Arena. 48

Storage Belt Investigation and Crazy Team Aftermath

Yu Xiaogang examines the Twenty-Four Moonlit Bridge's reaction to poisoned needles and restricts Tang San's interference with its inner space. After Shrek defeats Crazy Team, he notices that Frenzy ended much earlier than expected and detects its aura in Tang San's meridians. He investigates the defeated opponents' injuries but does not uncover Ji Yuan's cross-body devouring network. 52 53 54 55

Identification of the External Soul Bone

After Tang San returns from Star Dou Great Forest with a Man Faced Demon Spider soul ring and eight retractable spider lances, Yu Xiaogang conducts repeated observations and identifies the lances as an External Soul Bone. He warns Tang San that its potential is extraordinary but that its growth and fusion create new risks. 82 83

Advanced Rejection Theory

Yu Xiaogang determines that Tang San's Clear Sky Hammer and External Soul Bone are rejecting one another, with Blue Silver Grass caught between them. He forbids Tang San from deliberately using the Clear Sky Hammer, limits use of the Eight Spider Lances, and dismisses Zhu Zhuqing's parasitism theory as unsupported by the evidence. 83 84

Shrek Seven Devils Training

Yu Xiaogang takes charge of the Shrek Seven Devils' training, beginning with weighted endurance runs between Shrek Academy and Suotuo City. His regimen emphasizes physical foundations, perseverance, coordination, and mutual support while accommodating Tang San's restrictions. 84 85 86 87

Dai Mubai's Injury and Recovery

When Tang San's Eight Spider Lances attack Dai Mubai during sparring and drain a large portion of his White Tiger origin, Yu Xiaogang attributes the incident to the Man Faced Demon Spider's bloodthirsty instinct being triggered amid external-soul-bone rejection. He accepts responsibility for underestimating the danger, suspends Tang San from combat training, and develops a recovery plan based on Blue Silver Grass's apparent life-attribute compensation. 90 92 93

Preparation for Emperor Team

Yu Xiaogang analyzes Emperor Team before Shrek Academy's upcoming Soul Battle. His personal connection to Yu Tianheng and the Blue Lightning Tyrant Dragon Clan sharpens his resolve, while his tactical guidance focuses on exhausting Yu Tianheng's Soul Power and preventing Tang San from relying on the unstable Eight Spider Lances. 94

When Tang San violates that restriction, Yu Xiaogang attempts to stop the match and argues that conceding is preferable to risking another uncontrolled incident. After Shrek wins, he examines Tang San's lightning injuries, rejects premature claims that the lances have safely evolved, and orders several days without Soul Power use or release of the External Soul Bone. 96 98 99 100

Dugu Bo's Raid

When Dugu Bo invades Shrek Academy over Dugu Yan's defeat, Yu Xiaogang attempts to protect Tang San by presenting a Spirit Hall Honorary Elder token and revealing his Blue Lightning Tyrant Dragon Clan connection. The attempt fails against the Title Douluo's overwhelming strength. 101

Immortal Herb Research

Yu Xiaogang oversees the Shrek students as they consume immortal herbs acquired from the Ice and Fire Yin Yang Well. He recognizes that the herbs can alter seemingly defective martial souls, particularly as Ning Rongrong's Seven Treasure Glazed Tile Pagoda evolves toward the Nine Treasure Glazed Tile Pagoda. 123 129

Shared-Origin Resonance

When the students' transformed martial souls become dependent on Tang San's Blue Silver Grass for stable cultivation, Yu Xiaogang explains the effect as Shared-Origin Resonance. He believes the dependence will lessen once their remaining medicinal power is absorbed, unaware that Ji Yuan's Dark Web is maintaining it. 131 132 141

Failed Rank 30 Breakthrough

Seeking to escape his Rank 29 bottleneck, Yu Xiaogang consumes the Nine-Grade Purple Ganoderma and attempts to cultivate Tang San's revised Mysterious Heaven Skill. The process initially mutates Luo Sanpao favorably, but concealed toxin and destructive energy trigger hallucinations, qi deviation, and the collapse of his heart meridians. 132 133 134

The aftermath establishes that he has lost most of his cultivation rather than merely failed to advance. Roughly seventy percent of his main meridians are severed, his dantian leaks Soul Power, and Luo Sanpao's damaged foundation prevents ordinary recovery. Tang San destroys the formula and turns the search for rare restorative resources into a collective Shrek mission. 135

Critical Condition and Heaven Dou Journey

After Yu Xiaogang's cultivation backlash leaves him near death, Tang San and the Shrek students seek healing resources through the Heaven Dou Tournament. Yu Xiaogang briefly regains consciousness to urge them forward, warn them against reckless cultivation, and direct Tang San to use every available connection to locate a cure. 135 136 138

Heaven Dou Tournament Advisement

Although debilitated and reliant on a wheelchair, Yu Xiaogang continues assisting Shrek Academy's tournament campaign. He provides tactical analysis of Blazing Fire Academy and confirms that Tang San survived Huo Wu's Ring Fusion without meridian damage. 146 148

He then advises Tang San against Feng Xiaotian, emphasizing consecutive-force accumulation and the danger of the final slash. After Tang San wins with the Clear Sky Hammer, Yu Xiaogang orders an immediate group withdrawal because the public exposure of Twin Martial Souls creates a new political threat. 149 150 151

Medicinal Aid and Advancement Tournament

Rare herbs from the Seven Treasure Glazed Tile Sect modestly stabilize Yu Xiaogang after the preliminaries. He warns Tang San that Spirit Hall may act outside official matches and, following Salas's presumed death, directs the team's attention toward the individual elimination tournament. 152 158

During the Advancement Tournament, he supplies another theoretical explanation for Tang San's abnormal abilities by attributing Plant Academy's collapse to enhanced Blue Silver Grass rank suppression. Emperor Xue Ye's Meridian-Restoring Grass subsequently improves his meridians, though Ji Yuan secretly diverts most of the medicinal power. 164

Gorge Ambush and Journey to Spirit City

Yu Xiaogang accompanies Shrek toward the finals despite being too weak for extended horseback travel. After Yue Guan and Gui Mei attack the convoy, he survives the overturned carriage and warns that Spirit Hall's open use of Titled Douluo makes Spirit City still more dangerous. 165 166

Appeal to Bibi Dong

Yu Xiaogang seeks Bibi Dong's Twin Martial Soul cultivation information, but she refuses and aggravates his damaged meridians through pressure. He conceals her declaration that Tang San must die, believing disclosure would distract his disciple or provoke a confrontation before the finals. Ji Yuan secretly removes the lingering Rakshasa death qi that would otherwise threaten his survival. 168

Seven-in-One Finals Preparation

Faced with Spirit Hall's three Soul Kings, Yu Xiaogang intensifies Shrek's coordinated training and constructs a formation to transmit six students' power into Tang San. Ning Rongrong stabilizes the gathered Soul Power, while the Clear Sky Hammer serves as the only proposed Martial Soul capable of bearing the full combined output. 168 169

Although the initial attempt suffers severe losses and strains Tang San's arm, another supervised attempt manifests Weapon Soul True Body. Yu Xiaogang orders the power dispersed before an actual strike can endanger the team and surroundings. The formation also unwittingly gives Ji Yuan a complete channel through which to harvest the students' Soul Power. 169 170

Trivia

• Ji Yuan considers Yu Xiaogang especially useful because his theories consistently rationalize the effects of Ji Yuan's hidden parasitism. 4 8 13 21
• Yu Xiaogang’s concern for Tang San is sincere, even when his examinations inadvertently worsen Tang San’s condition. 25
• Ji Yuan covertly places an offspring spore on Yu Xiaogang before the Soul Hunting Forest expedition, but Yu Xiaogang never detects it. 6
• Yu Xiaogang's explanation that Tang San is affected by twin-martial-soul and External Soul Bone rejection remains persuasive enough that Tang San repeatedly trusts it over Zhu Zhuqing's suspicions. 75 84
• His long-standing Rank 29 bottleneck is a source of deep personal shame, despite the respect he earns as a martial-soul theorist. 123 133
• Ji Yuan secretly preserves Yu Xiaogang's life after the ganoderma backlash because Yu Xiaogang's theories remain useful for concealing the parasite's influence over Tang San and the Shrek students. 134 136
• His post-backlash survival and partial recovery are repeatedly manipulated: Ji Yuan provides sustaining vitality while consuming most of the restorative power intended for him. 136 152 164
• The seven-in-one formation he devises to overcome Spirit Hall's team also becomes an efficient devouring channel for Ji Yuan's Ambrosial Arbor. 169 170
• Bibi Dong's response to Tang San's refusal to abandon Xiao Wu is influenced by memories of Yu Xiaogang's own earlier stubborn refusal and departure. 179