Sun Yu

Biodata

Feature	Detail
Name	Sun Yu 5 6 9 13 19 20 23 26 33 34 37 38 43 47 48 54 55 61 63 69 86 116 143 150 171 224 231 242 279
Alias	Lone cultivator 5; Sha Xing Sun Yu 69; King Wei of Great Gan 86 94
Affiliation	Unaffiliated 5; nominally King Wei of Great Gan 86 94
Cultivation Techniques	Eight Divisions Vajra Skill 1 6, Iron Skin Bear King Skill 7 11, Cold Toad Breath Swallowing Technique 11, Pigua Saber Technique 6, Great Sun Boiling Blood Art 13, Heavenly Sword Marrow Cleansing Scripture 26, Fetal Transformation Creation Art 32 33, Eight Desolations Prison Suppressing Technique 38, Eight Desolations Aspect of the Purple Pole 56, Three Calamities Nine Extremes Great Devil Aspect 67 68, Nine Extremes Imperial Dao Opening Scripture 76, Eight Desolate Emperor Bone Technique 76, Great Brahma Soul Suppression Sound 95 96, Tai Xuan Ascending Immortal Art 116, Void-Shattering Tyrant Bone Art 142, Ancient Bone-Eroding Art 252
Divine Abilities	Cold Iron Demonic Body 11 19 20, Dark Gold Devil Body 23, Asura Undying Body 37, Myriad Tribulations Undying Demon Body 119 127 128, True Martial Dharma Body 150
Martial Skills	Beginner Archery 2 3, Levitation on Grass 16, Swimming Dragon Steps 21 22, Giant Spirit Trample 18, Annihilation World Suppressing Seal 46, Great Wind Song 67 68 69, Great Burning Heaven Hand 67 68, Purple Heaven Divine Thunder 67 69, Sky Wolf Shooting Sun Bow 135, Great Evolution Divine Art 279
Mount	Azi, initially an Archaic Mutant Thunder Swallowing Beast 61 63; later a Dharma Aspect Realm Great Demon 76, Azure Dragon 133, Purple-Eyed Thunder Hou 143, Chaos Demon Dragon 171, and World King Realm demon beast 170

Physical Description

Sun Yu's appearance undergoes significant changes as he cultivates various martial arts techniques. Initially, he is described as a "sickly boy" with a "perpetual dullness on his face" 1. However, after cultivating the Eight Divisions Vajra Skill, his breathing becomes even, and his face gains an "irrepressible spark" 1. His skin, which was somewhat fair, takes on an "extremely dark, ashen-blue hue" and becomes hard and cold like "pig iron" after initiating the Iron Skin Bear King Skill 7. As he progresses, his muscles bulge, and his skin transforms from dark blue-black to an "extremely deep dark gold," with tendons like "coiled black pythons" beneath 7. At the Perfection stage of the Iron Skin Bear King Skill, his skin and membranes are so tough that a hunting knife shatters against his arm without leaving a mark 7. Later, after cultivating the Great Sun Boiling Blood Art and the Cold Iron Demonic Body, his skin turns "cold white" with "dark red demonic patterns surging beneath the surface" 50. This "cold white Asura Undying Body" is described as extremely perfect and filled with a "violent aesthetic," capable of withstanding powerful attacks without a single wound or mark 50 53. He is often seen wearing coarse linen clothes, an old bamboo hat, and mud-splattered straw sandals, though these clothes are frequently shredded in combat, revealing his firm and well-proportioned upper body 19 20 24 50 53.

Following his absorption of Heavenly Human Law Fragments, Sun Yu's Myriad Tribulations Undying Demon Body reaches the Heavenly Human tier, while his Extreme Dao Grotto-heaven and physical body evolve together 127 128. After cultivating to Heavenly Human Realm Perfection, his body becomes a realm unto itself, capable of shattering space through a clenched fist and withstanding millionfold gravity 131. His physical density continues to increase through the absorption of Heavenly Human Cores, stellar origin sources, and other high-order resources 135 171. Upon activating the True Martial Dharma Body, he enters the Heavenly Human Realm directly through his physical body, further elevating his already extreme physique 150.

In the later higher worlds, Sun Yu's cold-white body develops profound dark-gold crystalline texture and dark-purple ancient demonic patterns across his muscles and bones as he repeatedly reforges it with immortal origin, Death Qi, spatial fragments, and primordial resources 196 240 252 276. His left arm can manifest dark-purple Ancient Annihilation Demonic Runes, granting it a pronounced armor-piercing quality against high-dimensional laws and artifacts 240 241. By the time he enters the Abyssal Imperial Tomb and the Abyssal True Realm, his physical density and Prison Suppressing Gravity have reached a level at which Death Qi capable of cleaving stars, spatial-temporal turbulence, and Half-step Dao Realm attacks cannot inflict meaningful damage 251 271 283.

Specific details include:

• Eyes: Initially, his eyes hold an "irrepressible spark" 1. After cultivating the Iron Skin Bear King Skill, a "dark red ferocity, akin to that of a ferocious bear," flashes within his pupils 7. Later, his eyes are described as "pitch-black" with "dark red Devil rings" 50 or "demonic rings" that flicker with "soul-stirring, eerie light" 53 58. They can also be "extremely sharp" 19 or "as calm as a bottomless ancient well" 20. After absorbing the Asura Blood Spring, the demonic rings in his pupils become nearly solidified 111. After the Heavenly Human breakthrough, a gray-white Heavenly Human Law halo appears outside the demonic rings 127 131. Upon activating the True Martial Dharma Body, the demonic rings vanish and are replaced by a deep starry-sky projection 150. In later worlds, his eyes are repeatedly described as abyss-black and nearly emotionless 196 279.
• Skin: Initially fair 7, it becomes dark, ashen-blue, and hard like pig iron 7, then transforms to a "deep dark gold" 7. Eventually, it becomes "cold white" with "dark red demonic patterns" 50, described as "like the finest mutton-fat jade" with a "subtle, restrained luster" 20. This "cold white Asura Undying Body" is impervious to blades, fire, and water 50 53. His later Myriad Tribulations Undying Demon Body repeatedly tears and regenerates while assimilating Heavenly Human Law and high-order blood essence 127 128. It later develops a dark-gold crystalline texture able to withstand high-dimensional Death Qi, spatial fragments, and Dao Realm sealing laws 251 276 279.
• Musculature: His muscles bulge and his tendons resemble "coiled black pythons" 7. His upper body is "firm and well-proportioned, devoid of exaggerated muscle bulges" 20. His physical force and density eventually become sufficient to shatter space, rupture void barriers, and physically resist high-dimensional flames 131 137 194. During the later evolution of his True Martial Dharma Body and Myriad Tribulations Undying Demon Body, his newly formed musculature carries a dim, destructive sheen and is marked by ancient dark patterns 150 196 240.
• Hair: His long black hair dances wildly in fire 53.
• Temples: His temples are noted to be "bulging" 13.
• Gait: He has a "steady gait" 13.
• Height/Build: He is described as a "slender figure" 53 and can appear as an "insurmountable, ten-thousand-foot iron mountain" 43. When manifesting his Asura Demonic Mark, he transforms into a ten-thousand-foot Devil 91.

Background

Sun Yu began his journey as a transmigrated servant of the Qian Family, facing harsh hunting quotas and the threat of starvation 1. He gained a mysterious system that granted him the Eight Divisions Vajra Skill, improving his physical condition and offering daily skill points 1. After mastering Beginner Archery, he could silently pierce a leaf from one hundred paces and used hunting income to buy back his indenture contract 3. After witnessing the brutal execution of a fellow servant, Sun Yu bought his freedom for twenty taels of silver, using his newly acquired archery skills 3. He then joined the Ten Thousand Treasures Caravan as a guest elder, where he cultivated the Pigua Saber Technique and advanced to the Skin Tempering Realm of the Houtian Realm 6.

His strength quickly became apparent, leading to his appointment as Guard Captain of the Wanbao Merchant House after he defeated their previous captain 9. However, the head shopkeeper attempted to exploit him, demanding half of his Heart's Blood to feed a Blood Tai Sui 9. Sun Yu refused, killed the shopkeeper and his accomplices, consumed the Blood Tai Sui, and acquired the Cold Toad Breath Swallowing Technique 9 10 11. He continued to cultivate, reaching the Viscera Refining Realm and developing the Cold Iron Demonic Body 14.

Sun Yu's growing power drew attention, and he participated in the Heavenly Pride Martial Arts Examination, where he intimidated other disciples with his strength 15 16. He later faced and defeated numerous cultivators, including an elder of the Heavenly Sword Sect, revealing his Blood Washing Realm cultivation 24. After looting the corpse of Daoist Master Ku Jian, he became the target of a Blood Pursuit Order from the Heavenly Sword Sect and fled to the Blood Sea Devil Abyss 26.

In the Devil Abyss, Sun Yu cultivated the Fetal Transformation Creation Art, consuming Fifth-Order Demon Beasts and entering the Fetal Transformation Realm 32 33. The Heavenly Sword Sect, led by Grand Elder Gu Jianhun, pursued him into the abyss, but Sun Yu defeated them and annihilated the sect 33 34 36. His actions caused panic among other sects and led to Provincial Governor Xiao Tiannan, along with leaders from the Blood Saber Gate and Iron Clothes Fortress, plotting to eliminate him at the Cold Dragon Blood Abyss 36 37. Sun Yu accepted their invitation, effortlessly defeating those who tried to block his path 38. He later reached Divine Sea Realm Perfection, destroying the Nine Dragon Refining Heaven Furnace and defeating Lu Yuan, a Martial Marquis of the Great Yan Dynasty 53 55. Sun Yu then tamed an Archaic Mutant from the Thunder Pool as his mount and continued to defy the Great Yan Dynasty's Martial Marquises, shattering Lie Fentian's Dharma Aspect 63.

After obtaining and absorbing Martial Marquis Dharma Aspect Cores, Sun Yu entered the mid-Dharma Aspect Realm and created the Three Calamities Nine Extremes Great Devil Aspect by fusing Fire, Wind, and Lightning aspect methods 67. He subsequently entered the Primordial Demon Bone ruins, intimidated the Great Yan Dynasty and Tuoba Clan into retreat, and perfected Great Wind Song and Purple Heaven Divine Thunder in seclusion 68 69. He later killed Song Mufeng and Tuoba Yuan, consumed five Dharma Aspect Cores, reached Dharma Aspect Realm Great Perfection, and helped Azi advance into a Dharma Aspect Realm Great Demon 76.

Sun Yu's rise continued through direct war against Great Yan and the Tuoba Clan. He destroyed the Tuoba Ancestor's half-step True Martial Realm War Soul in his ten-thousand-foot Devil form, annihilated the Great Yan Grand Marshal's million-soldier Flesh Pagoda and Nation Protecting Blood Array, and contributed to Great Yan's destruction 91 92. Great Gan subsequently enfeoffed him as the different-surname King Wei and granted him ten top-grade spirit veins, though Sun Yu remained fundamentally independent 86 94.

After departing Great Gan, Sun Yu entered Central Soil, opposed the Three Great Sacred Lands, and advanced through the Earth Immortal, Heavenly Human, and later higher realms by seizing Law Fragments, Demon Bones, and cultivation resources 98 116 127 131. He annihilated the Three Sacred Lands' Heavenly Human ancestors, claimed the Heaven Burying Abyss, and eventually departed through a realm-transmission array with Azi 135 137 142. In the Black-Yellow Great World, he continued to plunder resources from the Ironblood Sect and Great Zhou Dynasty, activating the True Martial Dharma Body after absorbing Grotto-Heaven Cores 143 146 150.

In the void beyond, Sun Yu consumed the core of Giant Spirit Star, elevating the Eight Desolations Prison Suppressing Technique to the Extreme Realm and gaining control over ten-millionfold gravity 171. He then fought the Nine Yang Sect, killing Four Yang and Five Yang Realm cultivators and enduring the Seven Yang World-Burning Law 173 179 183 194. His continued growth ultimately allowed him to crush tens of thousands of World King Realm cultivators and Eight Yang Realm experts with twenty-millionfold gravity, before reaching half-step Emperor Realm strength and employing hundred-millionfold Prison Suppressing Gravity against Venerable Realm opponents 206 224.

After entering the interdomain trial zones, Sun Yu destroyed the Annihilation Sword Tomb's formation and devoured its Primordial Sword Marrow core, strengthening his body before confronting an Emperor Realm chief examiner 226. He then broke into the Origin Divine Domain, killed its peak Emperor Realm Governor after tearing apart the Governor's Life-Bound World, and used the map found within the Governor's core to reach the Central Divine Court 231. There, he massacred the Divine Court's army and Imperial Realm divine generals, killed four half-step Saint Realm commanders, and continued toward the inner court's true ruler 232.

Sun Yu subsequently slaughtered Heavenly Dao incarnations, pillaged the Chaos Immortal Dynasty, and killed its early Immortal Emperor ruler 234 240. After defeating the gravekeeper of the Buried Immortal Abyss and taking the Origin Crystal Core, he entered the Immortal Domain Origin Sea, tore the First Immortal Emperor apart, and claimed the Source Dao Fruit 241 242. His path next brought him into conflict with Nine Extremes Divine Mountain and the Heavenly Court, including the destruction of a Heavenly Court war fortress and his forcible entry into the Abyssal Imperial Tomb 245 246 251.

Within the Imperial Tomb, Sun Yu used its Death Qi and the Origin Realm Core to temper his body while fighting the remains of the late Creation Realm Taiyuan Ancestor 252 258 260. He later smashed through the Heavenly Court's Nebula Defense Line and directly confronted the Half-step Dao Realm Abyssal Heavenly Emperor 271 272. After entering the Origin Forbidden Sea, Sun Yu endured its storms and harvested primordial Dao Bone resources before defeating Wasteland Hunters and soul-searching their leader for the location of the Realmheart Abyss and its Dao Realm origin crystal cores 276 279.

Power Progression

Cultivation Stage	Skill/Technique	Details	Chapter
Houtian Realm	Eight Divisions Vajra Skill	Improves physical condition; reached Perfection in six days, leading to a powerful heartbeat and improved muscle definition 1 2.	1, 2
Houtian Realm	Beginner Archery	Reached Perfection in six days; grants silent arrow release and hundred-step accuracy, allowing Sun Yu to pierce a leaf from one hundred paces 2 3.	2, 3
Houtian Realm	Pigua Saber Technique	An incomplete saber technique focused on wide, powerful swings; reached Perfection in six days 6.	6
Houtian Realm (Skin Tempering Realm)	Iron Skin Bear King Skill	A top-tier defensive technique that makes skin hard as pig iron; reached Perfection in a few days 7.	7
Houtian Realm (Bone Forging Realm)	Cold Toad Breath Swallowing Technique	Reached Great Perfection in the Black Crow Mountain bear cave; its extreme cold Inner Breath enabled the fusion that created the Cold Iron Demonic Body 11.	11
Houtian Realm (Viscera Refining Realm)	Great Sun Boiling Blood Art	A Yang-based Internal Breath cultivation method for the Viscera Refining Realm; reached Viscera Refining Realm and began Cold Iron Demonic Body 13 14.	13, 14
Houtian Realm (Viscera Refining Realm)	Cold Iron Demonic Body	Supreme Dao Divine Ability created through the fusion of Iron Skin Bear King Skill and Cold Toad Breath Swallowing Technique; completed its initial Yin-Yang transformation after the Great Sun Boiling Blood Art reached Perfection 11 14.	11, 14
Innate Realm	Levitation on Grass	A low-level basic movement technique; reached Perfection in six days 16.	16
Innate Realm	Giant Spirit Trample	A self-straining martial skill that Sun Yu mastered through his exceptional body; greatly improves explosive force and speed 18.	18
Innate Realm	Swimming Dragon Steps	An Innate Grade martial skill emphasizing communication with heaven and earth using Qi and Blood; reached Major Accomplishment in five days 21 22.	21, 22
Innate Realm (Blood Washing Realm)	Heavenly Sword Marrow Cleansing Scripture	Core cultivation method for the Marrow Changing Realm; reached Marrow Transformation Perfection, gaining the ability to exhale sword qi and cut metal with bare hands 26 30.	26, 30
Innate Realm (Blood Washing Realm)	Cold Iron Demonic Body	Supreme Dao Divine Ability; reached ultimate state 24.	24
Fetal Transformation Realm	Eight Desolations Prison Suppressing Technique	An incomplete body-refining cultivation technique that uses the body to suppress the eight desolations; grade surpasses Fetal Transformation and Divine Sea Realms 35 36.	35, 36
Divine Sea Realm	Asura Undying Body	Physical body reached Perfection, becoming invulnerable to all arts 41 52.	41, 52
Divine Sea Realm	Annihilation World Suppressing Seal	Compresses True Essence to create a solidified great seal; mastered to Perfection in five days 46.	46
Divine Sea Realm	Eight Desolations Aspect of the Purple Pole	Lu Yuan's core cultivation technique for the Dharma Aspect Realm, focusing on strength and defense; cultivated to Perfection in six days 56.	56
Mid-Dharma Aspect Realm	Three Calamities Nine Extremes Great Devil Aspect	Formed by fusing Fire, Wind, and Lightning Dharma Aspect methods after Sun Yu absorbed two Martial Marquis Dharma Aspect Cores 67.	67
Dharma Aspect Realm	Great Wind Song, Great Burning Heaven Hand, Purple Heaven Divine Thunder	Obtained from Martial Marquis cultivation methods; Great Burning Heaven Hand and Three Calamities Nine Extremes Great Devil Aspect reached Perfection, while Great Wind Song reached Proficiency 67 68.	67, 68
Dharma Aspect Realm	Great Wind Song, Purple Heaven Divine Thunder	Perfected during seclusion in the Primordial Demon Bone ruins 69.	69
Dharma Aspect Realm Great Perfection	Nine Extremes Imperial Dao Opening Scripture and Eight Desolate Emperor Bone Technique	Perfected over ten days; Sun Yu then absorbed five Dharma Aspect Cores to form a multicolored Law Core and reach Great Perfection 76.	76
True Martial Realm	Asura Blood Spring	Absorbed the full Asura Blood Spring, increasing physical density and bringing his Inner World to the threshold of mid-stage True Martial Realm 111.	111
True Martial Realm	Spine of the Primordial Eight-Armed Asura Emperor	Fused the third-ranked Superior Heavenly Dipper Demon Bone into his spine, granting his True Martial Law Domain the Extinction Law and allowing him to break into the True Martial Realm 112 113.	112, 113
True Martial Realm	Great Brahma Soul Suppression Sound	Cultivated an incomplete divine-soul defensive secret art that condenses a Soul Suppression Bell in his Sea of Consciousness to resist divine-soul attacks 95 96.	95, 96
Earth Immortal Realm	Tai Xuan Ascending Immortal Art	Reached Perfection while absorbing and purifying spiritual energy at the World Severing Platform, allowing Sun Yu to enter the Earth Immortal Realm 116.	116
Earth Immortal Realm	Myriad Tribulations Undying Demon Body	Formed after the system assimilated a wisp of Heavenly Human Law into Sun Yu's Extreme Dao Physique, replacing the earlier body-refining divine ability 119.	119
Heavenly Human Realm	Myriad Tribulations Undying Demon Body	Absorbed Heavenly Human Law Fragments, elevating the divine ability and physical body to the Heavenly Human tier 127 128.	127, 128
Heavenly Human Realm Great Perfection	Heavenly Human cultivation	Perfected the Heavenly Human Realm after integrating the Heavenly Human Law Fragment and Earth Core Fire Essence; body became a realm unto itself 131.	131
Heavenly Human Realm	Sky Wolf Shooting Sun Bow	Used to launch a Purple Thunder Divine Arrow that killed Netherworld Ancestor 135.	135
Heavenly Human Realm	Void-Shattering Tyrant Bone Art	Mastered before confronting the forces gathered at Myriad Worlds Mountain 142.	142
Heavenly Human Realm	True Martial Dharma Body	Activated after absorbing two Grotto-Heaven Cores, allowing Sun Yu's physical body to directly enter the Heavenly Human Realm state 150.	150
Higher Realm	True Martial Dharma Body	Advanced through Proficiency to Major Accomplishment; the latter transition raised Sun Yu's contained Prison Suppressing Gravity to ten-millionfold 155 166.	155, 166
Higher Realm	Eight Desolations Prison Suppressing Technique	Reached the Extreme Realm after Sun Yu refined the unstable top-grade gravity origin source within Giant Spirit Star; grants control over ten-millionfold gravity 171.	171
Higher Realm	Prison Suppressing Gravity	Increased from ten-millionfold gravity to twenty-millionfold gravity against World King Realm opponents, then hundred-millionfold gravity against Venerable Realm opponents 171 206 224.	171, 206, 224
Half-Step Emperor Realm	Extreme Dao Physique and Prison Suppressing Gravity	Demonstrated hundred-millionfold Prison Suppressing Gravity, killing dozens of Venerable Realm Body Cultivators in a single move 224.	224
Post–Half-Step Emperor Realm	Myriad Tribulations Undying Demon Body	Devoured the Primordial Sword Marrow core in the Annihilation Sword Tomb, further increasing his physical strength before confronting an Emperor Realm chief examiner 226.	226
Higher Realm	Prison Suppressing Gravity	Displayed one-billion-fold suppression against the Central Divine Court's army and Imperial Realm divine generals, before increasing to five-hundred-billion-fold while refining the Chaos Immortal Dynasty's resources 232 240.	232, 240
Higher Realm	Prison Suppressing Gravity	Reached one-hundred-trillionfold gravity while fighting the First Immortal Emperor and later operated at twenty-five-quadrillionfold mass within the Abyssal Imperial Tomb 242 251.	242, 251
Higher Realm	Myriad Tribulations Undying Demon Body	Underwent a high-dimensional crystallization leap in the Emperor's Tomb, stabilizing a fifty-trillionfold Extreme Dao mass field and further hardening the Indestructible Golden Body 258.	258
Higher Realm	Prison Suppressing Gravity	Contained one-hundred-quadrillionfold gravity while breaching the Heavenly Court's Nebula Defense Line, then reached two-hundred-million-trillionfold gravity after absorbing primordial Dao Bone marrow in the Origin Forbidden Sea 271 277.	271, 277
Higher Realm	Great Evolution Divine Art	Used to forcibly soul-search the Wasteland Hunters' leader and obtain information concerning the Realmheart Abyss and Dao Realm origin crystal cores 279.	279

Abilities

Physical Prowess

Sun Yu possesses extraordinary physical strength, speed, and resilience, often referred to as a "Cold Iron Demonic Body" or "Asura Undying Body" 19 56. His physical capabilities allow him to perform feats such as lifting a hundred-thousand-jin iron anchor with one hand and tearing apart a five-hundred-zhang, eight-armed Divine General Dharma Aspect with his bare hands 19 54. As his cultivation advances, his Extreme Dao Physique and evolved divine body allow him to physically resist Heavenly Human techniques, shatter void barriers, and defeat higher-realm cultivators without relying on conventional True Essence attacks 131 137 146 172.

• Applications:
  • Immense Strength: Can lift extremely heavy objects and overpower opponents with raw physical force 19. He can destroy flying ships and sect gates with punches 34. He later breaks the Ironblood Sect's city gate, kills a late True Martial Realm guard with his bare hands, and crushes a Heavenly Human Realm cultivator's domain through physical force 146. At later stages, he tears apart the First Immortal Emperor, crushes nation-suppressing imperial artifacts, and physically destroys the Abyssal Heavenly Emperor's Heaven-Opening Sword Light 240 242 271.
  • Extreme Speed: Capable of moving at speeds that create afterimages and sonic booms, making him difficult to track and allowing him to close distances rapidly 16 23. By compressing extreme gravity beneath his feet and using Great Wind Song, he can cross void distances instantaneously 222. This speed remains effective against Seven Yang Realm opponents, the First Immortal Emperor, and the Half-step Dao Realm Heavenly Emperor 195 242 272.
  • Unparalleled Durability: His body is incredibly tough, able to withstand sword qi, crossbow bolts, and even direct attacks from Dharma Aspects without injury 19 23 34 49 50. His skin becomes like pig iron or dark gold, making him invulnerable to blades and spears 7 19. He later walks unharmed through the Seven Yang World-Burning Sea of Fire and withstands high-dimensional flames after tempering on the Spiritless Dead Star 194. His crystallized Myriad Tribulations Undying Demon Body further withstands Death Qi wind blades, spatial fragments, Dao Realm sealing formations, and a Half-step Dao Realm sword strike 251 276 279 283.
  • Regeneration: The Asura Undying Body can instantly regenerate catastrophic injuries, including a hand vaporized by backlash from the Devil Bone Bow 76. Its vitality also enables him to endure the repeated tearing and restoration caused by Asura Blood and Heavenly Human Law Fragments 111 127. The later Myriad Tribulations Undying Demon Body repairs the damage caused by Chaos Demonic Dragon Law, high-dimensional flames, Death Qi, and other destructive forces while Sun Yu uses them to temper himself 166 194 252.
  • Gravity Manipulation: The "Eight Desolations Prison Suppressing Technique" enhances his physical body's gravity, creating a "Prison Suppressing Force Field" 36. He can apply this gravity to himself, increasing his density and making him heavier than profound iron 49 50. At its Extreme Realm, he controls ten-millionfold gravity, later displaying twenty-millionfold and hundred-millionfold suppression 171 206 224. His later physical mass rises into the trillion and quadrillion ranges, allowing him to collapse starry-space formations, destroy Emperor Realm opponents, and forcibly disrupt high-dimensional laws 242 251 271 277.
  • Environmental Resistance: His Asura Undying Body allows him to absorb powerful attacks like the Purple Heaven Divine Thunder without harm 56. His evolved body also withstands millionfold gravity and destructive Heavenly Human Law forces 127 131. In the Abyssal Imperial Tomb, he deliberately absorbs corrosive Death Qi through the Ancient Bone-Eroding Art, using it to strengthen his bones rather than merely resist it 252.
  • Demonic Transformation: By manifesting the Asura Demonic Mark, Sun Yu can become a ten-thousand-foot Devil and overpower a half-step True Martial Realm War Soul 91.
  • Law Breaking: Sun Yu's extreme physical mass, particularly when combined with the Ancient Annihilation Demonic Runes on his left arm, can smash apart high-dimensional law attacks, remnant formations, and Emperor Realm artifacts through brute force 240 241 271.
• Limitations:
  • Initially, cultivating powerful defensive techniques like the "Iron Skin Bear King Skill" caused immense pain and required specific resources 7.
  • High-order Law Fragments initially exceeded the capacity of his body, repeatedly tearing him apart before his Myriad Tribulations Undying Demon Body adapted and advanced 127.
  • The Eight Yang Heaven-Sealing Lock was able to suppress Sun Yu's True Essence and physical strength temporarily, causing him to fall toward the Blazing Flame Continent before he later escaped and retaliated 184 194.

Cold Iron Demonic Body

This Supreme Dao Divine Ability is a fusion of the "Iron Skin Bear King Skill" and the "Cold Toad Breath Swallowing Technique" 11. It grants Sun Yu bones like divine iron, blood like lead and mercury, and skin with extreme defense and cold counter-shock 11. Upon reaching the Viscera Refining Realm, it evolves further, providing a Yin-Yang Dharma Body, viscera like a furnace, and immunity to poisons and hidden injuries of the same realm 14.

• Applications:
  • Enhanced Defense: Provides extreme defense, making his skin and membranes incredibly tough 11.
  • Cold Counter-shock: Those who touch him have their inner energy frozen and Qi energy repelled 11.
  • Internal Fortification: His viscera become like a furnace, and his bones like cold iron, making him immune to poisons and hidden injuries within the same cultivation realm 14.
  • Dual Extreme Energy: Every movement carries a critical strike of dual extreme cold and extreme yang internal energy 14.
  • Blood and Qi Regeneration: Its Yin-Yang vortex continuously replenishes Sun Yu's blood and qi while suppressing and refining hostile energies 14 30.
• Limitations:
  • Requires specific cultivation techniques to fuse and advance 11.

Myriad Tribulations Undying Demon Body

The Myriad Tribulations Undying Demon Body is the later Heavenly Human-tier evolution of Sun Yu's body-refining divine ability. It enables him to assimilate Heavenly Human Law Fragments through repeated destruction and regeneration, ultimately transforming his physical body beyond the Earth Immortal tier 127 128.

• Applications:
  • Law Assimilation: Allows Sun Yu to contain, shatter, and integrate Heavenly Human Law Fragments into his Extreme Dao Grotto-heaven 127.
  • Heavenly Human Physique: Elevates his body to the Heavenly Human tier, enabling him to catch and snap a Heavenly Human Remnant Weapon with his bare hands 128.
  • Extreme Dao Physique: Supports a body so dense and complete that it becomes a realm unto itself after he perfects Heavenly Human cultivation 131.
  • High-Order Resistance: Allows Sun Yu to endure the combined Three Talents Heaven-Refining Array and confront multiple Heavenly Human Realm ancestors directly 132 133.
  • High-Dimensional Crystallization: Later develops a dark-gold crystalline body and ancient demonic bone patterns through repeated compression, Death Qi refinement, and the system's high-dimensional body evolution 196 252 258.
  • Extreme Environmental Tempering: Enables Sun Yu to use the Origin Forbidden Sea's spatial fragments and the Abyssal Imperial Tomb's Death Qi as body-tempering resources rather than threats 252 276.
• Limitations:
  • The initial absorption of Heavenly Human Law Fragments causes severe internal tearing and requires enormous origin energy and bodily resilience to survive 127.

Annihilation World Suppressing Seal

A martial skill that compresses True Essence to an extreme degree, forming a solidified great seal with immense weight and density 46. When combined with Sun Yu's Asura Undying Body and Prison Suppressing Force Field, its destructive power is immeasurable 46.

• Applications:
  • Extreme Compression: Compresses True Essence into a dense, heavy seal 46.
  • Overwhelming Suppression: Suppresses all things with absolute weight and density 46.
  • Destructive Force: At Perfection, it creates a dark red, materialized great seal that erases all matter it touches, leaving deep, smooth pits 46. It can crush powerful attacks like blood spears 48.
  • Grotto-Heaven Destruction: At the Heavenly Human tier, Sun Yu uses it to destroy the Purple Extreme Palace Master's Grotto-Heaven and cripple his cultivation 128.
  • Mass Suppression: Combined with Millionfold Prison Suppressing Gravity, it decimates the forces gathered at Myriad Worlds Mountain 142.
• Limitations:
  • Requires significant resources (e.g., 50,000 top-grade Spirit Stones) and time to master 46.
  • Its full potential is realized when combined with Sun Yu's unique physical attributes and other techniques 46.

Other Martial Skills and Techniques

Sun Yu has cultivated various other martial skills and techniques that contribute to his overall combat prowess.

• Beginner Archery: His first perfected martial skill. It grants silent arrow release, instinctive aim, and hundred-step precision; he used it to hunt deep within Black Crow Mountain and earn his freedom 2 3.
• Pigua Saber Technique: A basic martial skill emphasizing wide, powerful swings, using force to overcome skill 6. Its lethality is greatly increased by his speed 16.
• Eight Divisions Vajra Skill: An initial skill that improved his physical condition and laid the foundation for further cultivation 1 7.
• Giant Spirit Trample: A skill requiring immense physical strength and endurance, which Sun Yu mastered to gain extraordinary physical prowess 18.
• Great Wind Song: A top-tier movement technique that, when combined with compressed Prison Suppressing Gravity, allows Sun Yu to cross vast void distances with instantaneous bursts of speed 67 69 222.
• Great Burning Heaven Hand: A powerful fire-based offensive technique. Sun Yu used it to carbonize an early Dharma Aspect Realm Tuoba guard and later kill Sword Sect Ancestor 69 135.
• Purple Heaven Divine Thunder: A lightning technique perfected in the Primordial Demon Bone ruins; Sun Yu channels it into Purple Thunder Divine Arrows through the Sky Wolf Shooting Sun Bow 69 135.
• Three Calamities Nine Extremes Great Devil Aspect: A composite Dharma Aspect cultivation method created from Fire, Wind, and Lightning aspect techniques 67. It later reaches Perfection 68.
• Great Brahma Soul Suppression Sound: An incomplete divine-soul secret art that forms a Great Brahma Soul Suppressing Bell in Sun Yu's Sea of Consciousness. The bell protects him against divine-soul attacks through the resonance of Extreme Dao killing sound 95 96.
• Ancient Bone-Eroding Art: A body-tempering art that draws high-dimensional Death Qi into Sun Yu's body, using the Five Viscera Furnace and internal gravity to crush its corrosive properties and forge them into his bones 252.
• Great Evolution Divine Art: A divine-sense technique used to brutally force its way through the Wasteland Hunters' leader's Sea of Consciousness and extract his memories 279.
• True Qi/True Essence: Sun Yu utilizes pure True Qi for lift and combat 34. His Dantian contains a lake of pale golden True Essence that churns violently and pours into his limbs 34 49. He can also generate dark red Asura Gang Qi, which possesses extreme cold and extreme heat attributes 34 46.

Character Development

Sun Yu undergoes significant character development, evolving from a pragmatic survivor to a ruthless and supremely confident cultivator. Initially, he demonstrates strategic thinking and formidable combat skills, such as when he kills hunters and a Demon Beast, earning respect and opportunities from the Wanbao Merchant House 5. He shows determination and ambition by diligently cultivating the Pigua Saber Technique and the Iron Skin Bear King Skill to gain strength 6 7. His early encounters reveal a calm demeanor and a clear understanding that in his world, strength dictates respect and survival, as seen when he defeats Zhao Xiong and later defies the head shopkeeper's attempts to exploit him 9.

As his power grows, Sun Yu's ruthlessness becomes more pronounced. He shows no hesitation in killing those who threaten him or stand in his way, such as Xue Mang and his accomplices 14. He develops an unyielding stance against his enemies, demonstrating the power of his Dark Gold Devil Body and extreme speed in combat against Lin Zhentian and assassins 23. His confidence escalates dramatically; after defeating Chu Kuanglei and refusing to be tied down by any sect, he declares his intent to take what he desires 20 21.

Following the annihilation of the Heavenly Sword Sect, Sun Yu's reputation as a formidable and terrifying force solidifies 34 36. He cultivates the Eight Desolations Prison Suppressing Technique, further enhancing his physical power and striking fear into other sects 36. His indifference to life and death becomes more apparent, treating threats casually and effortlessly defeating powerful opponents 38. By the time he faces Martial Marquis Lu Yuan, Sun Yu exhibits unprecedented strength and ferocity, tearing apart a Dharma Aspect with his bare hands and showing complete disregard for the authority of the Great Yan Dynasty 49 54 55. His journey is marked by a continuous pursuit of power, a defiance of established order, and an unwavering resolve to eliminate any obstacles in his path 26 32 63.

This resolve does not diminish after he enters the wider Central Soil and later the Black-Yellow Great World. Sun Yu repeatedly treats the claims of sacred lands, dynasties, major sects, and interdomain organizations as irrelevant when they obstruct his goals 98 116 137 143. However, he displays a selective capacity for care toward Azi: he grants Azi a Dharma Aspect Core to assist its breakthrough, shelters it in his Extreme Dao Grotto-heaven after it is critically wounded, and continues to travel with it through increasingly dangerous worlds 76 133 142 171. His treatment of Azi contrasts with his near-total indifference toward hostile cultivators.

At higher levels, Sun Yu becomes increasingly willing to confront catastrophic risks personally. Rather than fleeing Giant Spirit Star's collapse, he remains at its center to absorb the star core's gravity origin source 171. He similarly survives the Seven Yang World-Burning Law and returns from the Spiritless Dead Star stronger than before 183 194. By the half-step Emperor Realm, his confidence has become absolute: he openly confronts Venerable Realm cultivators and the Ancient God Temple without recognizing their authority over him 224.

His later campaigns demonstrate that this contempt extends even to Emperor Realm, Immortal Emperor Realm, and Dao Realm authorities. Rather than negotiate with the Origin Divine Domain's Governor, the Central Divine Court, or the Heavenly Court, Sun Yu directly destroys their defenses, takes their cores and resources, and advances through the resulting conflict 231 232 240 271. He also becomes more deliberately methodical in body cultivation, compressing his Grotto-heaven and foundation instead of pursuing a hasty breakthrough, then using Death Qi, spatial fragments, and primordial bone marrow to strengthen himself 196 252 276. Even when facing Dao Realm sealing formations and a Dao Realm strike, he remains calm, answering threats with direct physical force and ruthless soul searching for further opportunities 279 283.

Relationships

• Er Niu: Sun Yu's companion who worries about their dire situation 1. Sun Yu keeps his newfound skill a secret from him 1.
• Head Shopkeeper (Wanbao Merchant House): Initially respectful of Sun Yu's strength, offering him a position as Guard Captain 5 9. Later reveals a ruthless and manipulative nature, attempting to exploit Sun Yu for his Heart's Blood 9. Sun Yu kills him after refusing the demand 10.
• Steward Zhou: A steward who recognizes Sun Yu's skill 3.
• Xue Mang: A greedy and arrogant middle-aged man who attempts to rob Sun Yu 14.
• Lin Jianxing: An arrogant noble who underestimates Sun Yu and challenges him 19.
• Lin Zhentian: An enemy whom Sun Yu shows no mercy to, killing him with a single strike 23.
• Gu Jianhun: Sect Master of the Heavenly Sword Sect who cannot discern Sun Yu's cultivation 33.
• Xiao Tiannan: Prefecture Lord who, along with Tie Zhan and Li Xuekuang, plots to kill Sun Yu 37. Sun Yu treats him with extreme indifference 38 and eventually kills him 45.
• Tie Zhan: Leader of the Iron Clothes Fortress, involved in the plot against Sun Yu 37 38. Sun Yu later crushes his skull with one hand 43.
• Li Xuekuang: Leader of the Blood Saber Gate, involved in the plot against Sun Yu 37 38. He kneels in fear before Sun Yu 43.
• Gu Qianxing: Commander of the Heavenly Punishment Guards, a mid-stage Divine Sea Realm cultivator who issues a kill order against Sun Yu 47.
• Lu Yuan: A Divine State Martial Marquis of the Great Yan Dynasty who initially underestimates Sun Yu 49. Sun Yu defeats and kills him, extracting information from his memories 54 55.
• Zhao Fu: A member of the Myriad Beast Sect who is sensitive to Qi and Blood and becomes fixated on Sun Yu's vigorous aura 57. Sun Yu kills him after he offends him 58.
• Mo Qianchou: A Myriad Beast Sect elder who initially attempts to protect Zhao Fu but immediately submits after Sun Yu kills him 58. He later seeks Sun Yu's direction when facing powerful factions at the Primordial Demon Bone ruins 68.
• Nie Fengxing: Wind Martial Marquis who notes Sun Yu's arrogance and the capital to back it up 63.
• Lie Fentian: Fire Martial Marquis who attacks Sun Yu and underestimates his strength 63.
• Azi: Sun Yu's loyal demon-beast mount and closest recurring companion. Sun Yu tames Azi at the Heavenly Chasm Thunder Pool 61 63, helps it break through to Dharma Aspect Realm Great Demon 76, rescues it after the Three Talents Heaven-Refining Array gravely wounds it 132 133, and continues traveling with it across worlds 142 171. Azi later reaches the World King Realm and remains Sun Yu's traveling companion until he recalls it to the Extreme Dao Grotto-heaven before entering the Buried Immortal Abyss 170 241.
• Song Mufeng: Ninth Prince of Great Yan who retreats before Sun Yu at the Primordial Demon Bone ruins 69. Sun Yu later kills him and seizes his Storage Bag 76.
• Tuoba Yuan: Young master of the Tuoba Clan who retreats alongside Song Mufeng 69. Sun Yu later kills him and takes his resources 76.
• Great Gan Empress: The ruler of Great Gan, who enfeoffs Sun Yu as King Wei in an effort to align him with Great Gan 86. She grants him top-grade spirit veins and Royal Library access after Great Yan's defeat, while showing concern over his coming conflict with the Three Great Sacred Lands 94 98. She later offers him both the Great Gan throne and herself, but Sun Yu dismisses the burdens of rulership and leaves her offer unresolved 119.
• Chen Tianji: Late Earth Immortal Realm leader of Grand Xuan Holy Land's Law Enforcement Hall. He attempts to apprehend Sun Yu and is killed along with thirty elders 116.
• Master of Purple Extreme Palace: An Earth Immortal Realm cultivator who attempts to kill Sun Yu over a Heavenly Human Law Fragment. Sun Yu breaks his remnant weapon, impales him, and destroys his Grotto-Heaven 125 127 128.
• Grand Xuan Ancestor, Netherworld Ancestor, and Sword Sect Ancestor: Three Heavenly Human Realm ancestors who lead the Three Talents Heaven-Refining Array against Sun Yu 132. Sun Yu defeats all three, kills Netherworld Ancestor and Sword Sect Ancestor, and absorbs their Heavenly Human Cores 133 135.
• Blood Butcher: Early Heavenly Human Realm Vice Sect Master of the Ironblood Sect. He attempts to suppress Sun Yu with the Blood Iron World domain and is killed by Sun Yu's bare-handed grip 146.
• Ji Wudao: Sovereign of Great Zhou. He confronts Sun Yu with an Inner World and imperial dharma manifestation but is captured and killed, with Sun Yu taking his core 150 152.
• Ji Tianming: Crown Prince of Great Zhou, whose Great Perfection Heavenly Human Realm emergence follows Ji Wudao's death. He covets Sun Yu's body 152.
• Zhao Lie: A Four Yang Realm Nine Yang Sect cultivator who orders Azi's capture and Sun Yu's death. Sun Yu destroys his fleet, snaps his divine weapon, and kills him with one knee strike 172 173.
• Nine Yang Sect Grand Elder: A Seven Yang Realm cultivator who attempts to refine Sun Yu's origin blood essence and previously leaves him trapped on the Spiritless Dead Star 193. Sun Yu returns after tempering there and walks through his Seven Yang sea of fire 194. Sun Yu later captures him, extracts his Seven Yang Core, and kills him 195.
• Ancient God Temple Outer Hall Elder: An opponent who attempts to capture Sun Yu with the Ancient Confinement Grand Array after Sun Yu kills Venerable Realm Body Cultivators 224.
• Chief Examiner: An early Emperor Realm expert who confronts Sun Yu after he destroys the Annihilation Sword Tomb trial formation and devours its Primordial Sword Marrow core 226.
• Governor of the Origin Divine Domain: A peak Emperor Realm expert who ambushes Sun Yu with thousands of Emperor-rank puppets and traps him in a Life-Bound World. Sun Yu destroys the puppets and world, tears off the Governor's arms, destroys his core, and takes the map to the Central Divine Court 231.
• First Immortal Emperor: The peak Great Saint Realm ruler who confronts Sun Yu in the Immortal Domain Origin Sea. Sun Yu breaks his World Tree Scepter, tears him apart with Prison Suppressing Gravity, and claims the Source Dao Fruit 242.
• Gravekeeper of the Buried Immortal Abyss: A mid-stage Immortal Emperor Realm guardian who attempts to prevent Sun Yu from entering the abyss with corpse immortals and an ancient bronze mirror 241. Sun Yu defeats him and proceeds to take the Origin Crystal Core 241.
• Taiyuan Ancestor's Corpse: The decayed late Creation Realm corpse guarding the Origin Realm Core in the Abyssal Imperial Tomb. It engages Sun Yu in a prolonged physical battle and uses the core's energy to regenerate and strengthen itself 258 260.
• Abyssal Heavenly Emperor: A Half-step Dao Realm Heavenly Court ruler whose true body descends after Sun Yu destroys the Nebula Defense Line. Sun Yu shatters his Heaven-Opening Sword Light, seizes his sword in close combat, and continues the confrontation without submitting to his pressure 271 272.
• Wasteland Hunters' Leader: A one-eyed leader who attempts to seal Sun Yu with a Dao Realm-grade Blood Hexagram Sealing Formation 279. Sun Yu breaks the formation, kills him, and uses Great Evolution Divine Art to search his memories for information about the Realmheart Abyss 279.
• Lord of the Heartrealm Abyss: A Dao Realm opponent whose attack sends Sun Yu backward but fails to inflict serious injury; Sun Yu openly mocks the inadequacy of his phantom after withstanding the strike 283.

Themes

Sun Yu's journey is characterized by several overarching themes, most notably the relentless pursuit of power, the consequences of that power, and the constant struggle for survival and defiance against established authority. From his early days, Sun Yu demonstrates a clear understanding that in his world, strength dictates status and survival 5 9. His physical prowess, exemplified by his Dark Gold Devil Body and Cold Iron Demonic Body, allows him to overcome seemingly insurmountable odds, whether it's enduring a barrage of crossbow bolts 23 or tearing apart a Divine General Dharma Aspect with his bare hands 54. This theme of overwhelming power is repeatedly highlighted as he effortlessly defeats and kills opponents, showcasing his dominance and leaving others in fear and awe 34 43.

However, this immense power comes with significant consequences. Sun Yu's actions, such as killing prominent figures and looting their belongings, draw the wrath of powerful entities like the Heavenly Sword Sect, leading to a Blood Pursuit Order 26. His defiance of the Imperial Court's rules, including destroying official seals and annihilating prefectures, marks him as a "madman" and challenges the very foundation of the Great Yan Dynasty 45 62. This defiance is a recurring motif, as Sun Yu consistently refuses to submit to authority or be controlled, valuing his freedom and independence above all else 21 63. He views the Great Yan Dynasty as "a small, insignificant nation," and its rules as incapable of suppressing him 45 55.

The theme of survival and adaptation is also central to Sun Yu's narrative. When faced with overwhelming pursuit, he strategically chooses to flee to the deadly Blood Sea Devil Abyss, a zone where even Transcendent Realm experts fear to tread, rather than be worn down by his enemies 26. His journey is a continuous cycle of facing threats, adapting his skills, and growing stronger, as seen in his cultivation breakthroughs and mastery of new techniques 14 22. Ultimately, Sun Yu's story is a testament to the idea that in a world governed by strength, absolute power can shatter established rules and authority, but it also necessitates constant vigilance and a willingness to defy any who stand in the way 45 49.

As the scale of the narrative expands, this conflict with authority extends beyond local sects and dynasties to the Three Great Sacred Lands, Central Soil Alliance, interdomain sects, and the Ancient God Temple 98 137 224. Each attempt to restrain Sun Yu instead becomes a source of resources or a catalyst for his advancement, whether through Heavenly Human Law Fragments, Grotto-Heaven Cores, stellar origin sources, or the gravity source within Giant Spirit Star 127 150 171. The recurring pattern emphasizes Sun Yu's Extreme Dao: he answers superior numbers, formations, and higher cultivation with a body and force that reject conventional limits 132 142 179.

This pattern continues into the Origin Divine Domain, the Immortal Domain, the Heavenly Court, and the Dao Realm regions. Emperor Realm puppets, Divine Court armies, Immortal Emperor artifacts, and Dao Realm sealing formations are all reduced to obstacles, resources, or proof that established hierarchies cannot contain Sun Yu's physical path 231 240 271 279. The increasingly hostile environments he enters—Death Qi-filled imperial tombs, the Origin Forbidden Sea, and high-dimensional battlefields—also reinforce the theme of self-forging: every dangerous force is treated as material with which to make his body denser and stronger 252 276.

A secondary theme is the contrast between Sun Yu's indiscriminate ruthlessness toward enemies and his sustained loyalty toward Azi. While hostile forces are commonly reduced to resources or obstacles, Azi receives cultivation resources, protection, and a place within Sun Yu's Grotto-heaven when critically injured 76 133. This relationship gives Sun Yu's otherwise solitary pursuit of power a continuing element of companionship across worlds 142 171.