Li Mu

Biodata

Feature	Information
Name	Li Mu (李暮)
Species/Race	Human; a transmigrator retaining memories of a prior life
Gender	Male
Affiliation	Hufflepuff House; Hogwarts School of Witchcraft and Wizardry; Shushan Taoist Academy; Celestial Alliance
Occupation/Role	Hogwarts student and Shushan exchange student; Hufflepuff Quidditch Seeker; Executive Vice President of Angel Investment Company
Status	Alive
First Appearance	Hogwarts, My Ass 1

Power Progression

Stage / Realm / Level	Chapter	Notes
Minor Foundation Establishment	96 124	Eight years of Shushan training give him a solid cultivation base, though he lacks practical experience and has not completed a higher named realm.
Word Spirit application	123 124	Under pressure in the Forbidden Area corridor, he combines the rhythm, emotion, and intent of speech with Accio, successfully capturing the winged key.
Heightened meditation and bodily perception	139	Following repeated life-threatening encounters, he finds meditation, fist practice, and perception of his surroundings noticeably smoother.

Background

Li Mu was an ordinary university graduate in his original life who entered clerical work. After falling asleep while working overtime, he transmigrated into the body of an infant in another world while retaining memories of both past and future information. 1

Li Jianmin found the infant near a meteorite impact in a deep forest, adopted him, and raised him in the mountains. Li Mu grew up calling Li Jianmin “Old Man,” balancing genuine affection with frequent frustration at his adoptive father’s eccentric habits and restrictive mountain formations. 1 2

At roughly two years old, Li Mu began eight years of Shushan cultivation. His training included running mountain paths, carrying water, fieldwork, medicinal baths, moonlit meditation, memorizing the Banish Evil Incantation, talisman techniques, and foundational Xuanmen practices. 2 By age six, he possessed exceptional physical endurance for a child. 2

When Li Jianmin offered him a choice of magical academies in 1991, Li Mu recognized that events in Britain aligned with the Harry Potter timeline. He chose Hogwarts, initially intending to witness familiar history firsthand. 2 His later encounters with deviations from that history—especially Hinata—convince him that passive observation is no longer possible. 55

Appearance

Li Mu is a black-haired, black-eyed boy of East Asian appearance, noted for his healthy wheat-colored complexion, balanced build, and strikingly mature bearing. 3 4 58

• Black hair and black eyes. 3
• Wheat-colored or brownish-yellow skin. 3 4
• Well-proportioned and physically fit from years of cultivation training. 2 4
• Carries himself with a maturity that adults such as Madam Pince find unusual for an eleven-year-old. 58

Personality

Li Mu is outwardly confident, playful, and prone to exaggerated boasts, but his humor often masks the perspective of someone who has lived two lives. He can be pragmatic to the point of disregarding school rules when he believes the risk is worth the result. 1 46 55

His knowledge of the original timeline initially makes him calculating: he deliberately befriends Harry Potter because he considers proximity to the protagonist strategically valuable. 4 As events diverge, however, his concern for Harry, Hermione, and other students becomes genuine, driving him to intervene against threats rather than remain a spectator. 55 121 136

Li Mu is observant and skilled at reading motives, often using historical examples and psychological insight to advise others. 41 42 He can also be manipulative, notably exploiting Moaning Myrtle’s loneliness and insecurity to win her cooperation. 43 Despite this, he repeatedly shows empathy toward vulnerable people and creatures, including Myrtle, Cedric, and an injured winged key. 88 91 123

The Mirror of Erised exposes the depth of his unresolved attachment to his former life: beneath his ambition and apparent adaptation lies a desire to see his parents, grandparents, girlfriend, and former friends again. 103 104

Abilities & Skills

Shushan Cultivation

Li Mu possesses an eight-year foundation in Xuanmen cultivation under Li Jianmin.

• Built exceptional stamina and physical strength through daily mountain training. 2
• Uses meditation to sense changes in Qi, power, and surrounding auras. 91
• Employs hand seals and Taoist incantations alongside Western magic. 34 46
• Has a solid foundation but lacks the real combat experience needed to fully develop it. 124

Talisman Arts and Invisibility

Li Mu can use cinnabar talismans, hand seals, and incantations to perform Taoist techniques.

• Casts an Invisibility Spell using a talisman affixed to his forehead, coordinated hand seals, and a spoken incantation. 46
• The technique is considered a mid-to-high-level Xuanmen secret art and is unreliable for a practitioner with only foundational training. 46
• His invisibility talisman lasts roughly an hour before failing. 101
• Uses an invisibility talisman while moving through Hogwarts at night. 101

Word Spirit

Li Mu learns to reinforce magic through the cadence, emotion, intention, and spiritual focus of spoken words.

• Applies Word Spirit principles to modify Accio and capture a resistant winged key. 123
• Uses controlled rhythm and intonation to improve repeated Wingardium Leviosa casts against animated chess pieces. 126
• Understands Word Spirit as one application of meditation-derived thought power. 119

Western Magic

Li Mu learns and uses Hogwarts spellwork while adapting it to his cultivation background.

• Levitation Charm — Uses Wingardium Leviosa to rescue, lift, and incapacitate animated chess pieces. 125 126
• Summoning Charm — Uses Accio against the winged key; later modifies it through Word Spirit. 123
• Disarming Charm — Disarms Quirrell during their confrontation in the Mirror chamber. 128 129
• Full Body-Bind Curse — Uses Petrificus Totalus during his duel with Quirrell. 129
• Confundus Charm — Defeats the giant Troll by incapacitating it rather than fighting directly. 127
• Fire-Drawing Charm — Escapes Devil’s Snare by using fire. 122
• Killing Curse — Under extreme emotional pressure, casts Avada Kedavra at the White Tiger emerging from the Mirror of Erised. 133 136

Flight and Quidditch

Li Mu is an unusually gifted flier whose cultivation background complements broom flight.

• Recognized for the Celestial Dynasty’s Sword Flight technique. 8
• Joins the Hufflepuff Quidditch team as a first-year and replaces Cedric as Seeker. 56 77
• Purchases a Nimbus 2000, attracting considerable attention across Hogwarts. 56
• Executes the Lansky Feint and catches the Golden Snitch to secure Hufflepuff’s victory over Ravenclaw. 80
• Reaches a state of intense focus that temporarily eliminates distracting thoughts while pursuing the Snitch. 80

Problem-Solving

Li Mu relies on adaptability rather than direct force when facing unfamiliar challenges.

• Pacifies Fluffy with a music box after provoking the three-headed dog with humming. 122
• Identifies the injured winged key, captures it, heals it, and releases it after opening the next door. 123 124
• Exploits the magical loopholes of the living chessboard after realizing it operates more like a strategy game than conventional Wizard Chess. 126
• Solves Snape’s potion riddle to pass through the black flames. 128

Equipment / Weapons / Items

• White Sword Wand — His wand, used for Hogwarts spellcasting and Word Spirit-enhanced charms. 126
• Nimbus 2000 — His personal racing broom and Quidditch equipment. 56 77
• Cinnabar talismans — Used for Taoist techniques, including invisibility. 46 101
• Heart Protecting Armor — A Shushan defensive item Li Mu gives Harry for his birthday; it later breaks while protecting Harry from a devastating attack. 9 136
• Philosopher’s Stone — Appears in Li Mu’s pocket after his encounter with the Mirror of Erised; he keeps it but initially does not know how to use it. 104 106 121
• Dark Bible — A black-covered book titled Words of Power, Charms, Illusions, Prophecies - An Exploration of Medieval Meditation Rules and Applications, which introduces him to Word Spirit, illusion, charm, and divination principles. 97 119
• Black Feather Sword — A gyrfalcon sent by Li Jianmin to deliver letters. 95

Relationships

• Li Jianmin — Adoptive father, master, and longtime mountain caretaker. Li Jianmin trains Li Mu in Shushan cultivation and later reveals himself as leader of the Celestial Alliance. 1 2 143
• Harry Potter — Friend and initially a deliberate strategic ally. Their relationship develops into genuine mutual concern, particularly after the Heart Protecting Armor saves Harry. 4 9 136 138
• Hermione Granger — Close friend whom Li Mu advises through historical and psychological examples. She worries intensely about him and frequently seeks his judgment during crises. 41 42 83 119
• Ron Weasley — Friend and fellow participant in Hogwarts adventures; Li Mu’s relationship with him is generally cordial despite Ron’s occasional awkwardness. 15 46 138
• Hinata — Ravenclaw student who fascinates Li Mu because she appears to disrupt the expected timeline. Their relationship grows through mutual concern, secrecy, and her repeated warnings that he should leave Hogwarts. 53 101 117 138
• Moaning Myrtle — Initially manipulated by Li Mu into becoming an ally, then later assists his research into ghostly telekinesis. 43 91
• Cho Chang — Ravenclaw Seeker and Quidditch opponent. Li Mu defeats her in Hufflepuff’s match against Ravenclaw. 77 80
• Severus Snape — Li Mu distrusts neither Snape nor the assumption that he cursed the broom, and later learns Snape had tried to help him during the incident. 83 138
• Albus Dumbledore — A wary but respectful relationship. Dumbledore recognizes Li Mu’s role in foiling Voldemort’s plan, while Li Mu remains guarded about Dumbledore’s attempts to learn his secrets. 85 135
• Shi Kongming — Celestial Alliance associate and former company assistant who helps Li Mu adapt to his Executive Vice President role. 143 144
• Asakura Hao — Hinata’s master, whose presence makes Li Mu immediately uneasy. In the unfinished later-story outline, Hao is identified as an enemy who considers Li Mu a rival chosen one. 143 161

Story Role / Major Arcs

Arrival at Hogwarts

Li Mu leaves Li Jianmin’s mountain home to attend Hogwarts after recognizing the world as one resembling the Harry Potter story he knew from his previous life. In London, he meets Hagrid and Harry at the Leaky Cauldron, then presents himself to Harry as a Shushan exchange student in order to form a friendship. 2 3 4

Sorted into Hufflepuff, Li Mu is disappointed by the assignment but resolves to make the best of it. He begins building connections with Harry, Hermione, Ron, Hufflepuff classmates, and the mysterious Ravenclaw student Hinata. 20 28

Choosing to Change History

Li Mu initially wants to observe known events from a safe distance, but Hinata’s existence and the timeline’s growing deviations convince him that history can be changed. He decides to intervene actively rather than rely on Harry and the other expected protagonists. 55 121

His decision leads him to join Hufflepuff Quidditch as Seeker, where his Nimbus 2000 and unusual flying ability make him a school celebrity. 56 77 During a match, his broom is sabotaged by an Evil Curse, nearly killing him and increasing his distrust of the forces acting around Hogwarts. 81 83

Mirror of Erised and the Philosopher’s Stone

Li Mu encounters the Mirror of Erised with Harry, Ron, and Hinata. The mirror shows him his former family and girlfriend, revealing that his deepest wish is reunion with the people he lost through transmigration. 103 104

After seeing himself holding a scarlet stone in the mirror, Li Mu finds the Philosopher’s Stone in his pocket. Although tempted by its promise of immortality and the possibility of eventually returning home, he lacks any method to use it safely. 104 106

Forbidden Area Corridor

Believing Voldemort will act while Dumbledore is absent, Li Mu enters the fourth-floor Forbidden Area corridor alone. He passes Fluffy, Devil’s Snare, the winged keys, the enchanted chessboard, the Troll, and Snape’s potion riddle through a mixture of Taoist cultivation, Western magic, improvisation, and Word Spirit. 121 122 123 126 127 128

In the Mirror chamber, he duels Quirrell and Voldemort. Professor McGonagall, Harry, and Hermione arrive as reinforcements, but a White Tiger later emerges from the Mirror and attacks. In desperation, Li Mu casts the Killing Curse against it. 129 130 133

Aftermath and Summer Internship

Li Mu survives the Forbidden Area incident, though he remains hospitalized for several days and learns that an unknown enemy had targeted him. Dumbledore publicly credits him with helping thwart Voldemort’s plot. 135 136 138

For the summer, Li Jianmin prevents Li Mu from returning to the mountain and instead appoints him Executive Vice President of Angel Investment Company in London. Li Mu adapts to the role while maintaining a cultivation routine and using the company’s specialized training facilities. 140 144

Notable Quotes

“Everyone has attachments, but being too extreme and obsessed is not a good thing.” 103

“Since the plot could be changed, he would of course join in and try to make the world go according to his ideas.” 55

Trivia

• Li Mu speaks fluent English with an authentic British pronunciation despite growing up in the deep mountains. 1
• He was taught Go by Li Jianmin from early childhood and became capable of defeating him more often than not by age six. 1
• He considers Li Jianmin’s habit of cheating at Go with his beard one of his master’s most infuriating traits. 1
• Li Mu’s original-life memories include video games, online fiction, and modern popular culture, which influence how he interprets magical crises. 80 126
• In the unfinished later-story outline, Li Mu is identified as the Celestial Dynasty’s chosen one, destined to challenge the long-standing balance between Eastern and Western magical forces. 161