Yu Yuan

Biodata

Feature	Details
Name	Yu Yuan (玉渊)
Alias(es)	Sun Emissary
Species/Race	Human; bearer of the Golden Sacred Dragon, Temporal Saint Dragon, Ice Dragon King, and Fire Dragon King bloodlines
Gender	Male
Affiliation	Formerly connected to the Blue Lightning Tyrant Dragon Clan; allied with Dugu Bo and Dugu Yan
Occupation/Role	Soul master, soul engineer, Great Spirit Arena combatant
Status	Alive
First Appearance	Chapter 1

Power Progression

Stage / Realm / Level	Chapter	Notes
Rank 3	1	Awakened the same initially weak Fat Dragon martial soul as Yu Xiaogang; the Blue Lightning Tyrant Dragon Clan refused to provide cultivation resources.
Rank 15	1	Absorbed Xiao Kong's 990,000-year Temporal Saint Dragon soul ring and survived its time-aging backlash.
Rank 29	9	Continued cultivating with Xiao Kong's soul ring split into temporary portions; still possessed only one true soul ring.
Rank 30	16	Reached Rank 30 after consuming the Earth Dragon Golden Melon and strengthening his body and bloodline.
Rank 34	18	Had only one active soul skill despite reaching Level 34; intended to acquire future rings from Dragon Kings.
Two-level breakthrough	19	Soul power rose by two levels after his dragon bloodline resonated with Dugu Yan's evolved martial soul.
Second and Third Soul Rings	25	Received the Ice Dragon King and Fire Dragon King's soul rings after absorbing their paired arm bones.
Rank 43	28	Reached Level 43 after absorbing the Star Anise Mysterious Ice Grass, Infernal Delicate Apricot, and the Dragon Kings' remains; his fourth ring was another split portion from Xiao Kong.

Background

Yu Yuan was transported to Douluo Continent after dying in his previous life. His mother died giving birth to him, and his father later died while hunting soul beasts. As the child of a collateral Blue Lightning Tyrant Dragon Clan member, Yu Yuan was raised by the clan until age six. His Rank 3 Fat Dragon martial soul was treated as a failure, and Yu Yuanzhen sent him toward Yu Xiaogang as a prospective test subject rather than supporting his cultivation. 1 13

While traveling to Notting City, Yu Yuan encountered Xiao Kong, a Temporal Saint Dragon that transformed into a 990,000-year soul ring and entered his body. Yu Yuan endured extreme aging and bodily destruction before instinctively reversing the process and surviving. The absorption raised him to Rank 15 and began the evolution of his Fat Dragon martial soul. 1

Xiao Kong later revealed that Yu Yuan had existed in a previous timeline. In that future, Yu Yuan fought three gods, sought revenge for the Blue Lightning Tyrant Dragon Clan and Xiao Wu, and was ultimately killed by a God King after being branded an evil soul master. Yu Yuan and Xiao Kong established a master-servant partnership in the new timeline, with Yu Yuan agreeing to aid soul beasts after gaining sufficient power. 3

After gaining Xiao Kong's support, Yu Yuan extracted Yu Xiaogang's Golden Sacred Dragon bloodline and absorbed it himself. This awakened his light attribute, transformed his martial soul into the Golden Dragon, and further advanced his dragonification. 5 6

Appearance

Yu Yuan was originally a black-haired, blue-eyed six-year-old boy. The Temporal Saint Dragon bloodline accelerated his growth into a body and bone age closer to twelve while slowing his eventual aging. 1 8 13

• Usually has black hair and a calm, youthful appearance. 1 11
• Uses a white mask and the identity Sun Emissary in Great Spirit Arena matches. 8
• Dragonification changes his eyes into silver-gold vertical pupils and covers parts of his body with gold-and-silver scales. 4 6
• His dragonized arms later manifest distinct crimson fire and icy-blue frost effects. 26 29
• His bloodline pressure can suppress dragon-type martial souls and soul beasts when released. 15 16 30

Personality

Yu Yuan is exceptionally determined and survival-driven. He endured the Temporal Saint Dragon soul ring's lethal backlash through willpower, then immediately treated the resulting power as an opportunity to escape the future imposed on him by the Blue Lightning Tyrant Dragon Clan. 1

He is strategic, practical, and willing to use Time Reversal to repeat experiments, avoid detection, and correct disastrous outcomes. This extends to dangerous choices, including testing artificial soul bones and reversing a fatal battlefield outcome after realizing his actions had indirectly endangered others. 6 30 33

Despite his calculating methods, Yu Yuan takes responsibility for people he considers his own. He works to cure Dugu Yan and Dugu Bo's toxin problems, protects injured students in Sunset Forest, and orders Xiao Kong to rest rather than overwork himself. 11 13 33 38

Yu Yuan is socially inexperienced and frequently blunt in conversation, particularly when dealing with Dugu Yan. He nevertheless values restraint, promises, and retaining his human identity despite the growing influence of his dragon bloodlines. 11 14 20 27

Abilities & Skills

Time Reversal

The ability granted by Xiao Kong's Temporal Saint Dragon soul ring allows Yu Yuan to rewind time and retry actions.

• Reverses injuries, failed operations, and exposure to attacks such as Solar Flare. 6
• Can be used repeatedly to test inventions and artificial soul-bone effects before restoring events. 9 30 36
• Allows Yu Yuan to avoid some consequences, but he does not always activate it when he considers the resulting outcome useful or necessary. 5 29 33

Dragonification

Yu Yuan can transform portions of his body through the combined powers of his dragon bloodlines.

• His claws possess enhanced strength, spatial cutting, and time-aging effects. 4
• Dragonified eyes grant future sight, allowing him to anticipate ambushes and locate weaknesses. 6 29
• His dragonized spine repeats a correctly executed attack from 0.1 seconds earlier, effectively creating a second strike. 17
• Continued bloodline accumulation may eventually force a complete dragon transformation; Yu Yuan considers this a risk to his human identity. 27

Light Attribute and Solar Flare

The Golden Sacred Dragon bloodline awakened Yu Yuan's light attribute.

• Passively heals his injuries through light-element energy. 6
• Purifies toxins, allowing him to diagnose and treat the poison backlash affecting Dugu Yan and Dugu Bo. 10 13
• Solar Flare produces a blinding flash that Yu Yuan learned from the Golden Dragon and frequently uses in arena combat. 6 8
• Solar Flare can harm Yu Yuan's own eyes if he observes it through Future Sight; he has used Time Reversal to avoid the damage. 6

Ice and Fire Dragon King Inheritance

After absorbing the Ice and Fire Dragon Kings' arm bones and soul rings, Yu Yuan gained major ice- and fire-element powers.

• Second Soul Skill: Fire Dragon King's Raging Flame — contains the Fire Dragon King's remembered techniques, including destructive and self-damaging forbidden skills. 25 26
• Third Soul Skill: Ice Dragon King's Frost — contains the Ice Dragon King's remembered techniques, emphasizing battlefield control, defense, freezing, and preservation. 25 26
• Permafrost Flame Prison — combined domain effect that doubles ice-skill damage and reduces fire-skill consumption by half. 26
• His right arm applies burning effects, while his left arm inflicts freezing and frostbite. 26
• He can use techniques such as Frost Coffin and Permafrost · Dragon-Scale Frost Coffin to immobilize enemies and shield allies. 29 32
• Fire Dragon King skills can be extremely dangerous to Yu Yuan because many burn soul power, life force, or spiritual essence; he avoids using the most destructive techniques casually. 26

Dragon Heart and Dragon Lungs

The Ice and Fire Dragon King bloodlines created two new dragonized organs.

• Dragon Heart — increases vitality, strengthens elemental control, improves energy absorption, and slowly compresses soul power toward divine power. 26
• Dragon Lungs — enable light, fire, and ice dragon breath; combining elements risks damaging or rupturing his lungs. 26
• Yu Yuan can reclaim residual fire-element energy after using dragon breath, keeping its soul-power cost extremely low. 29

Soul Engineering and Theory

Yu Yuan applies Xiao Kong's future knowledge to soul tools, cultivation theory, medicine, and soul-beast research.

• Became a third-rank soul engineer and developed a soul-power storage and absorption device based on future “sealed milk bottle” technology. 9
• The storage device has high efficiency but carries a self-detonation risk. 9
• Reached Level 5 soul-engineering capability after repeatedly assembling an Automatic Sentry Turret with Time Reversal. 36
• Developed treatment plans for Dugu Yan and Dugu Bo, including medicinal regulation, soul cores, toxin storage, martial soul evolution, and soul tools. 13
• Proposed a Spirit Contract-based beast-taming system intended to improve relations between humans and soul beasts. 37 38

Equipment / Weapons / Items

• White mask — a self-made soul tool used to conceal his identity at spirit arenas. 8 11
• Soul power storage device — an experimental “milk bottle” capable of storing and absorbing soul power, with a risk of detonation. 9
• Wings of Time and Space — paired external soul bones provided through Xiao Kong's sacrifice; Yu Yuan could not yet safely fuse with them. 4
• Automatic Sentry Turret — Level 5 defensive soul tool assembled under Xiao Kong's guidance. 36
• Portable communication soul tool — Yu Yuan supplied the concept while Xiao Kong designed a device capable of communication within Heaven Dou City. 40

Relationships

• Xiao Kong — Temporal Saint Dragon soul spirit, master-servant partner, advisor, and source of Yu Yuan's time abilities. Xiao Kong sacrificed itself to empower Yu Yuan and remains devoted to his plan to support soul beasts. 3 4 38
• Golden Dragon — Yu Yuan's evolved detached martial soul, formerly called Fat Dragon. It uses light abilities, assists his healing and soul-bone absorption, and grows by consuming dragon-bloodline remnants. 6 15 25 27
• Dugu Yan — Yu Yuan's partner. He treats her toxin accumulation, helps her acquire a suitable third soul ring and soul bone, and supports the evolution of her dragon-blooded martial soul. 11 14 30 31
• Dugu Bo — Dugu Yan's grandfather and an ally who entrusts Yu Yuan with treating the family's toxin problem. Yu Yuan guides his martial-soul evolution into the Jade-Scaled Flood Dragon Emperor. 12 13 18
• Yu Xiaogang — Yu Yuan's half-brother and former intended mentor. Yu Yuan extracts his Golden Sacred Dragon bloodline, leaving Yu Xiaogang's martial soul origin severely damaged. 1 5 7
• Ice Dragon King and Fire Dragon King — Dragon King remnants whose soul bones, rings, bloodlines, and techniques Yu Yuan inherits beneath the Ice-Fire Yin-Yang Eyes. 21 25 26
• Huo Wu — A student Yu Yuan saves during the Sunset Forest beast horde. He protects her eyes with ice crystals and helps move the injured to safety. 33
• Ye Lingling — Dugu Yan's close friend, who agrees to remain with Yu Yuan and Dugu Yan after being asked to help. 36 38
• Qian Renxue — While disguised as Xue Qinghe, she becomes interested in recruiting Yu Yuan after learning of his connection to Dugu Yan and Dugu Bo. 40

Story Role / Major Arcs

• Notting City and Xiao Kong's Sacrifice — Escapes the Blue Lightning Tyrant Dragon Clan's plans after absorbing Xiao Kong's 990,000-year soul ring and awakening his time-based potential. 1 4
• Golden Sacred Dragon Bloodline — Extracts Yu Xiaogang's bloodline, evolves Fat Dragon into Golden Dragon, and gains light-based purification and Solar Flare. 5 6
• Sun Emissary Arena Career — Uses a mask, Dragonification, and Solar Flare to earn money and build a following at Great Spirit Arenas. 8
• Dugu Family Alliance — Meets Dugu Yan, identifies her toxin accumulation, earns Dugu Bo's trust, and begins curing the Jade-Scaled Snake family's inherited condition. 10 18
• Ice-Fire Yin-Yang Eyes — Consumes immortal herbs, enters the pool, contacts the Ice and Fire Dragon Kings, and inherits their soul rings, bones, bloodlines, and abilities. 20 21 25 27
• Sunset Forest Test — Uses the Serene Fragrance Qiluo Immortal Herb to draw soul beasts, tests his Dragon King powers, secures Dugu Yan's third soul ring, and rescues academy students after reversing time. 28 33
• Soul Tool and Spirit Contract Research — Advances his soul-engineering skill, creates defensive tools, and begins developing a contract system for soul beasts. 36 38
• Heaven Dou Academy Duel — Effortlessly defeats Yu Tianheng while Qian Renxue, disguised as Xue Qinghe, observes and considers recruiting him. 40

Trivia

• Yu Yuan dislikes the name “Sun Emissary,” but accepted it because he considers himself poor at naming things. 8 10
• The Great Spirit Arena partnered with him because Solar Flare matches were popular enough to support sunglasses sales. 8
• Yu Yuan originally called his martial soul “Fat Dragon,” while Xiao Kong later received his name because Yu Yuan struggled to name him. 1 3
• He regards cooking and soul-tool research as practical skills, and his cooking helps influence both Dugu Yan and Ye Lingling. 16 38