Mu Xuanheng

Biodata

Feature	Information
Name	Mu Xuanheng (穆玄恒)
Gender	Male
Species/Race	Human transmigrator
Affiliation	Sea God Pavilion; Shrek Academy
Occupation/Role	Soul Master; Soul Tool Engineer; Mu En's disciple
Status	Alive 133
Martial Souls	Chaofeng; Contract (Companion Martial Soul) 1 14
Public Martial Soul Identity	Phantom Scale Dragon, presented as a mutated Bright Holy Dragon to conceal Chaofeng 2
First Appearance	Chapter 1

Power Progression

Stage / Realm / Level	Chapter	Notes
Innate Full Soul Power	1	Awakened twin martial souls; Chaofeng suppressed the martial souls of two Titled Douluos. 1
Soul Master	4–5	Killed a crippled Dark Gold Dreadclaw Bear for his first soul ring and gained an external soul bone. 4 5
Soul Power Level 20	8	Reached level 20, then tempered his body with a Mystic Water Pill and Ice-and-Fire Body Tempering. 8
Soul Grandmaster	11–12	Absorbed a thousand-year Dark Evil God Tiger ring as his second ring after surviving Evil Soul Masters. 11 12
Soul Power Level 30	13	Had already reached level 30 but spent three years consolidating his foundation because his prior rings were unusually powerful. 13
Soul Elder / Level 35	14–15	Formed a Symbiotic Contract with the 700,000-year Snow Empress, receiving an orange third ring and Ultimate Ice affinity. 14 15
Soul Power Level 39	22	His Ultimate Ice compressed his soul power and slowed cultivation between levels 30 and 70. 22
Soul Ancestor	24–25	Obtained the Ice Jade Empress Scorpion torso bone and his fourth soul ring; gained Disaster-Fortune Reversal. 24 25
Soul King	61	Revealed that his Contract Martial Soul could produce soul rings without conventional soul-beast hunting. 61
Soul Emperor / Rank 67	84, 90	Was considered invincible below the Titled Douluo rank as a six-ring Soul Emperor; absorbing Ice Bear King Xiao Bai's soul bone raised him to rank 67. 84 90
Soul Sage	119	Completed his breakthrough alongside Gu Yuena; his seventh soul ring was golden. 119
Titled Douluo	133	Reached nine rings alongside Gu Yuena and began constructing a divine artifact. 133

Background

Mu Xuanheng is a transmigrator who grew up without parents in the Douluo world under the care of the Sea God Pavilion. At six, he awakened Chaofeng and the Contract Martial Soul, possessing Innate Full Soul Power. Mu En immediately recognized him as a potential peak powerhouse and took him as a disciple, while Xuan Zi became his senior brother and caretaker. 1 2 89

To protect him, Mu En concealed the true identity of Chaofeng behind the fabricated name Phantom Scale Dragon. This cover story allowed Mu Xuanheng to train publicly while keeping the Contract Martial Soul—and its ability to create pacts with soul beasts—secret. 2

His early cultivation was marked by extreme physical training, Soul Tool instruction, and repeated dangerous expeditions. He absorbed a Dark Gold Dreadclaw Bear ring and external soul bone for his first ring, then survived an encounter with the Holy Spirit Cult to acquire the Dark Evil God Tiger as his second ring. During that crisis, the remnant soul Electrolux entered his body. 4 5 9 12

Abilities & Skills

Chaofeng

Chaofeng is Mu Xuanheng's primary martial soul: a top-tier dragon-type martial soul publicly disguised as the Phantom Scale Dragon. Its presence can suppress other dragon-type martial souls and was strong enough to affect two Titled Douluos at awakening. 1 2

• Manifests dragon wings for aerial movement. 14 25
• Exerts martial-soul suppression, particularly against dragon-type opponents. 1 6
• Grants a dragon aura that reduces damage; damage below the reduction threshold can be fully negated. 88
• Its fixed soul skills restrict Mu Xuanheng from naturally gaining the Snow Empress's techniques through conventional ring absorption. 22

Chaofeng Dragon Claw

Mu Xuanheng's first soul skill is a close-combat dragon claw technique derived from the Dark Gold Dreadclaw Bear. 4 5

• Ignores defense. 5 6
• Can restrain or control targets. 5
• Can strike through the void; this application is also called the Void Dragon Claw. 5 8
• Was strong enough to defeat Xu Sanshi in a single exchange. 12

Phantom Dragon Demon Body

His second soul skill, derived from the Dark Evil God Tiger, is a full-body enhancement state. 12

• Doubles all physical attributes. 12
• Enables flight. 12 25
• Covers his body in dragon qi that provides damage reduction. 12
• Allows him to fight opponents far above his cultivation level. 38 40

Chaofeng Yuyuan and Ultimate Ice

Mu Xuanheng's third soul skill grants elemental control. After contracting the Snow Empress, his ice affinity developed into Ultimate Ice. 14 15

• Strengthens control over elements associated with a contracted soul beast. 14
• Gives him exceptional control over ice after his pact with the Snow Empress. 15
• Supports techniques including Eternal Frozen Domain and Ice Emperor's Wrath. 24
• Enables him to use the Snow Empress's self-created techniques, including Emperor Sword, Ice Extreme Peerless, Thousand Ruins Forbidden: Snow Slumber, and Northern Plains Frost Domain, Frost Snow Sword Tide. 46 54 121

Disaster-Fortune Reversal

His fourth soul skill converts negative conditions into beneficial effects, or beneficial conditions into negative ones. 24

• Can transform exhaustion, injury, and depleted soul power into offensive strength. 24
• Countered the resentment released by the Ten Thousand Soul Banner's wielder. 38
• Turned the Sword of Judgment's dark and light effects into power for himself during his fight with Ma Rulong. 46
• Can weaken opponents by reversing advantageous conditions. 24

Contract Martial Soul

Contract is a paper-like Companion Martial Soul that cannot absorb soul rings directly. Instead, it allows Mu Xuanheng to form contracts with soul beasts and use their strength and rings to empower Chaofeng. 1 2 14

• Has no stated limit on the number of soul rings it can provide to Chaofeng through contracts. 2
• Supports Equal, Symbiotic, and Master-Servant Contracts. 14 92
• Lets contracted soul beasts preserve their lives by sharing his lifespan or spiritual space. 14
• Allowed Mu Xuanheng to reveal that he could produce soul rings without hunting ordinary soul beasts. 61

Necromancy and the Undead Demiplane

Electrolux resides within Mu Xuanheng after their encounter in the Star Dou Great Forest and later becomes his teacher. 10 59

• Electrolux reproduced an Equal Contract based on a contract from the Divine Seal World. 59
• Mu Xuanheng can access an Undead Demiplane containing undead creatures and life-and-death energy. 71 81 87
• He relocated the entire Ice and Fire Yin Yang Well into the demiplane. 72
• Can summon large numbers of undead through a spatial gate. 87

Martial Soul Fusion Skills

Mu Xuanheng can form fusion skills with Gu Yuena and Gu Yueqiu'er. 68

• His fusion with Gu Yuena can raise both of their combat power to the Soul Saint level while wearing Battle Armor. 40
• Their three-person fusion with Gu Yueqiu'er manifests Mu Xuanheng's adult form. 68
• The trinity fusion grants Gu Yuena's elemental control, Qiu'er's ultimate strength, and Mu Xuanheng's own skills simultaneously. 68

Eye of Destiny

After acquiring the Three-Eyed Golden Lion's skull bone, Mu Xuanheng can open a third eye and invoke the Eye of Destiny. 122

• Provides resistance to spiritual attacks. 122
• Can impose weakening through the declaration, “In the name of destiny, I bestow weakening.” 122
• Was kept hidden until his battle against the Silver Dragon King. 122

Equipment & Items

• External Soul Bone of the Dark Gold Dreadclaw Bear — obtained alongside his first ring. 5
• Heart of Ice and Snow — soul bone from the Snow Empress; can summon her at peak strength and grant Mu Xuanheng one chance to cheat death. 22
• Ice Jade Empress Scorpion torso bone — obtained with his fourth soul ring. 24
• Heng Yue Battle Armor — Mu Xuanheng's self-made Battle Armor, named to mirror Gu Yuena's Yue Heng. 31
• Eternal Moon Battle Armor — later armor that enabled him to overwhelm Soul Douluo-level opponents. 83 84
• Connecting pieces — Soul Tool components that link travelers through soul power and protect them from airflow while flying. 36
• Spatial Soul Tool — used to store items such as his sweeping Soul Tool. 17

Relationships

• Mu En — Master and guardian. Mu En recognized Mu Xuanheng's potential at awakening, concealed his martial souls, and repeatedly protected his cultivation path. 1 2 14
• Xuan Zi — Senior brother and unreliable caretaker. He trained Mu Xuanheng, accompanied him on dangerous ring hunts, and was repeatedly punished for leaving him exposed to lethal threats. 2 9 12 59
• Yan Shaozhe — Senior fellow disciple. Yan Shaozhe accepted Mu Xuanheng as his junior, supported his placement at Shrek, and sought his Ultimate Ice to treat Ma Xiaotao. 2 13 19
• Bei Bei — Childhood companion, training partner, and friendly rival. Mu Xuanheng regularly defeated him through martial-soul suppression, though their rivalry drove both to improve. 3 6 7
• Electrolux — Remnant-soul mentor residing within Mu Xuanheng. He declined resurrection but chose to teach Mu Xuanheng the essence of his path. 10 59
• Snow Empress / Xue Di — Symbiotic contracted soul beast and Ultimate Ice teacher. She became Mu Xuanheng's orange third ring after he freed her from Ye Xishui's seal. 14 22
• Ice Empress / Bing Di — Contracted soul beast associated with his fourth ring and Ice Jade Empress Scorpion torso bone. 22 24
• Gu Yuena — Partner, rival, Battle Armor collaborator, and eventual adversary. Mu Xuanheng publicly declared himself her boyfriend, but their conflicting loyalties culminated in a battle to the death. 31 42 92 119
• Gu Yueqiu'er — Gu Yuena's younger sister and the Three-Eyed Golden Lion in human form. Mu Xuanheng formed a Master-Servant Contract with her to save her life. 57 92
• Xu Sanshi — Friend whom Mu Xuanheng urged to take responsibility for Jiang Nannan rather than pursue his martial soul's evolution at her expense. 12 13

Story Role / Major Arcs

Early Training and the Holy Spirit Cult

Mu Xuanheng's rapid early growth made him the shared hope of Shrek's Spirit Martial and Soul Tool Departments. Fan Yu predicted that he could reach ninth-rank Soul Tool Master and potentially surpass that level, while Mu En focused on laying a foundation strong enough for Mu Xuanheng to survive future threats. 6 13

After Xuan Zi left him alone in the Star Dou Great Forest, Mu Xuanheng killed an Evil Soul Master, encountered the Holy Spirit Cult, gained his second ring from the Dark Evil God Tiger, and learned firsthand why he wanted to eradicate Evil Soul Masters. 9 12 54

Contracting the Extreme North's Heavenly Kings

Seeking a third ring, Mu Xuanheng traveled with Mu En to the Extreme North and intervened in Ye Xishui's attempt to seal the Snow Empress. He freed Xue Di and persuaded her to accept an Equal Symbiotic Contract, gaining an orange third ring and Ultimate Ice. 14 15

He later returned to seek Bing Di, gained the Ice Jade Empress Scorpion torso bone and fourth ring, and began training in the Snow Empress's Three Ultimates. 22 24

Soul Tool Development and Battle Armor

Mu Xuanheng advocated adding Soul Tool education to Shrek's first-year curriculum, arguing that students needed early exposure before selecting a specialization. Mu En approved the proposal despite Yan Shaozhe's opposition. 13

Working with Gu Yuena, he developed Battle Armor far ahead of its era. Their first sets were named Heng Yue and Yue Heng, and later allowed them to contend with Soul Saint-level enemies despite lower cultivation. 21 31 40 46

Tournament Battles

During the Soul Fighting Tournament, Mu Xuanheng's orange soul ring shocked the Star Luo Empire and challenged accepted knowledge about soul-ring colors. He demonstrated that he could contend with Soul Emperor-level opponents despite being identified publicly as a Soul Ancestor. 43

Together with Gu Yuena, he defeated Yuan Ying, a Soul Saint-level Evil Soul Master wielding the Ten Thousand Soul Banner. Their victory established that their Battle Armor-enhanced combat power had reached the level of newly ascended Soul Saints. 38 40

War, Reform, and the Holy Spirit Cult

Mu Xuanheng proposed a joint-training agreement between Shrek and the Body Sect, using diplomacy to avert a confrontation with Du Busi. 53

He later expressed a political vision of replacing hereditary empires with a federation, arguing that status should come from ability and contribution rather than birth. 80

On the battlefield outside Heaven Dou City, he killed Tang Ya and defeated multiple Soul Douluo from the Holy Spirit Cult while wearing Eternal Moon Battle Armor. His performance earned him the reputation of being invincible beneath the Titled Douluo rank. 83 84

Conflict with Gu Yuena

After Gu Yuena's identity and Qiu'er's soul-beast identity were exposed, Mu Xuanheng and Gu Yuena were separated despite their mutual feelings. 92 96

Their conflict escalated after both reached Soul Sage. Gu Yuena revealed her intention to restore the soul beast race, while Mu Xuanheng fought to protect the people and relationships he had built. Their forces clashed in the Star Dou Great Forest, where both activated golden seventh rings and Battle Armor was destroyed under god-level power. 119

Mu Xuanheng continued fighting the Silver Dragon King despite her divine-power restoration. He ultimately revealed the Eye of Destiny to weaken her. 121 122

Notable Quotes

“First of all, I am not a soul master, but a proper Soul Elder.
Second, my life has barely begun, and I have no intention of dying just yet.”
— Mu Xuanheng to an Evil Soul Master 9

“Why must we choose from the wrong options? We can have an option of our own.”
— Mu Xuanheng on the future of the continent 80

Trivia

• Mu Xuanheng habitually calls Mu En “Old Man” and Xuan Zi “Second Old Man,” even after formally becoming Mu En's disciple. 1 2
• He reached Level 2 as a Soul Tool Master at ten years old and Level 3 shortly after entering Shrek. 13 18
• He publicly called Gu Yuena his girlfriend by kissing her on the Soul Fighting Tournament stage, provoking widespread hostility from spectators. 42