Yu Xiaochuan

Biodata

Power Progression

• Rank-nine bottleneck: Four-hundred-year-old and thousand-year-old ginseng fail to produce a breakthrough. Yu Xiaochuan believes evolving Caterpie into Metapod would overcome the barrier, but refuses to spend its evolutionary potential this early 11 12.
• Growth rate: He reports reaching rank nine within five months of awakening, despite starting with only half a rank of innate Soul Power 16.
• Evolution remains unfulfilled: Rayquaza is his intended destination, not an achieved form. Caterpie remains unevolved through his duel with Qian Renxue 1 7 24.

Background / History

Origins and Awakening

Yu Xiaochuan is a reincarnator who retains knowledge of the original story. His father belongs to a collateral branch of the Blue Lightning Tyrant Dragon Clan and possesses its signature Martial Soul; his mother is a commoner Soul Master with the Jade Ruler Martial Soul. He also has a talented elder brother who awakened the Blue Lightning Tyrant Dragon 1 2 17.

His own awakening produces Caterpie and innate half-rank Soul Power, leading the clan to compare him unfavorably with Yu Xiaogang. Yu Xiaochuan instead sees an opportunity: drawing on his previous life’s “Caterpie is a baby Rayquaza” meme, he believes his clan’s dragon bloodline could make that evolution possible 1.

The clan leader proposes that Yu Xiaogang adopt and educate him. Yu Xiaochuan refuses the adoption but accepts the cultivation method, intending to seek treasures capable of improving Caterpie’s potential rather than settle for a theoretical scholar’s career 2.

Rivalry with Yu Tianheng

At the clan school, Yu Xiaochuan discovers that Yu Tianheng fears insects. Caterpie accidentally lands on Tianheng’s face and frightens him unconscious, beginning a rivalry in which Tianheng repeatedly offers medicinal ginseng to secure rematches 3 4 6 9.

Yu Xiaochuan wins their first duel through a Caterpie ambush and the second by combining foul gas with a wooden-stick strike. In their third match, he faces Tianheng’s rank-twelve strength and first Soul Ring. He narrowly wins by evading Thunder Dragon Claw until Tianheng’s reserves diminish, then using Bug Bite to absorb and return his lightning Soul Power 5 6 9 10 11.

Despite this undefeated record, his own advancement stops at rank nine. He obtains permission to study at Nuoding Academy, secretly planning to locate the Blue Silver Emperor and its hundred-thousand-year Right Leg Bone 12.

Nuoding Academy and the Break with Yu Xiaogang

Yu Xiaochuan enters Nuoding Academy midyear with an official certificate listing rank-nine innate Soul Power. The certificate conceals his actual half-rank awakening and extraordinary subsequent growth. After rejecting another adoption offer from Yu Xiaogang, he defeats Xiao Chenyu with Electroweb and becomes the first-years’ recognized boss 13 14.

He uses Xiao Chenyu’s map to search for the waterfall concealing the Blue Silver Emperor, but finds nothing. He then spends a month reading Yu Xiaogang’s collection, only to discover that it lacks the geographical and cultural information he needs. Spirit Hall’s larger library becomes his next objective 15.

Yu Xiaogang attempts to prevent his departure, insisting that Caterpie has exhausted its potential. Yu Xiaochuan challenges him to a duel, staking their continued relationship against Xiaogang’s demand for adoption. He defeats the rank-twenty-nine researcher by exhausting Luo Sanpao’s three blasts, then using Martial Soul Possession and Bug Bite to strike Xiaogang’s kidneys 17 18 19.

Spirit Hall and Qian Renxue

Yu Xiaochuan deliberately emphasizes the similarities between himself and Yu Xiaogang when applying to Spirit Hall, hoping to attract Bibi Dong’s attention. His plan succeeds: she investigates his background, summons him to Spirit City, and ultimately adopts him. A papal decree confirms the adoption, and he receives unrestricted access to Spirit Hall’s books 16 17 19 20.

Bibi Dong’s affection provokes Qian Renxue’s jealousy. Yu Xiaochuan initially refuses her challenge because she is rank thirty-four, then negotiates a duel without Soul Rings or Soul Skills after a month of daily massages. During that month, he develops Sleep Powder through Caterpie’s Shield Dust 21 22 23.

In the duel, he secretly disperses Sleep Powder while evading her attacks. Qian Renxue falls asleep, giving him the victory. He lets her rest on his lap and applies Awakening Powder; she continues sleeping even after the powder’s effect is dispelled 24.

Appearance

Yu Xiaochuan is repeatedly described as exceptionally handsome despite his young age 2 17 18.

• Facial features: Sword-like brows and starry eyes 18.
• Possession marking: A red, Y-shaped mark appears between his brows when Caterpie possesses him 8 24.
• Minimal transformation: Martial Soul Possession does not give him visible insect limbs or other insect features 8.

Personality

Yu Xiaochuan is optimistic about Caterpie even when others dismiss it as worthless. His confidence does not prevent long-term caution: he suppresses an available evolution rather than risk limiting his future to Butterfree and potentially becoming trapped at rank twenty-nine 1 7 12.

He values practical results over a Soul Master’s dignity. He accepts being underestimated, demands payment before agreeing to disadvantageous fights, and freely uses ambushes, distractions, retreat, and psychological pressure. He also recognizes genuine danger, initially refusing to fight the much stronger Qian Renxue 4 5 6 10 21.

His gratitude has boundaries. He acknowledges Yu Xiaogang’s help and initially offers to care for him in old age, but refuses to accept him as a father or surrender control of his future. By contrast, he accepts Bibi Dong’s adoption for its substantial benefits and gradually becomes more sincere in addressing her as his mother 2 13 17 20.

Abilities & Skills

Caterpie and Nutrient-Based Cultivation

Caterpie is an external beast Martial Soul that can act separately from Yu Xiaochuan. The two share a mental connection, and Caterpie can be recalled with a thought 1.

• Converts food and medicinal potency into accumulated Soul Power 2 12.
• Eats aged Blue Silver Grass, medicinal ginseng, lightning-attribute leaves, and Soul Beast eggs 2 4 8 9.
• Its rapid early growth does not remove its underlying potential limit; stronger ginseng cannot force the rank-ten breakthrough 11 12.

Martial Soul Possession and Run Away

Yu Xiaochuan discovers that Caterpie can possess him despite being an external beast Martial Soul 8.

• Enhances physical strength, agility, and coordination 8.
• Allows him to perform Caterpie’s techniques through his own body, including wrist-fired silk and fist-based Bug Bite 8 9.
• Run Away helps him narrowly evade Thunder Dragon Claw 10.
• Does not erase physical disparities: he loses direct lightning-powered punching exchanges with Yu Tianheng and barely avoids Qian Renxue’s opening attack 10 24.

String Shot and Tackle

Yu Xiaochuan trains Caterpie to combine silk anchoring with body attacks and develops the same mobility under possession 3 8.

• Uses String Shot to swing, launch Caterpie, and escape attacks 3 18.
• Fires silk from his wrists and combines strands with adhesive webs to support greater weight 8.
• Travels through trees by anchoring and retracting silk 8 10.
• Strong attacks can sever the strands and force him to land 10.

Electroweb and Electric Power

A self-created Soul Skill developed through lightning-attribute feeding and repeated web practice 8.

• Releases a golden electrical ball that spreads into a restraining, continuously discharging web 8.
• Traps the Thunderstorm Sparrow, Xiao Chenyu, and Luo Sanpao 9 14 18.
• Can be fired from Yu Xiaochuan’s wrist during possession; he can also coat his fists in electricity 10.
• Offers limited damage against lightning-resistant Yu Tianheng and only briefly obstructs Thunder Dragon Claw 8 10.

Bug Bite

Caterpie learns Bug Bite upon reaching level nine. Under possession, Yu Xiaochuan performs it with his fists, treating them as the insect’s mandibles 9.

• Channels Bug-type power into close-range strikes 9 11.
• Adapts its consumption effect to absorb lightning Soul Power from Yu Tianheng’s punches 11.
• Stores absorbed power for a combined lightning-and-Bug-type finishing attack 11.
• Also absorbs some of Yu Xiaogang’s Soul Power during their duel 22.

Shield Dust and Sleep Powder

After the fight with Yu Xiaogang, Caterpie develops extremely fine scales that Yu Xiaochuan identifies as Shield Dust. Its stated protection is against the additional effects of moves 22.

• Yu Xiaochuan uses poison-making records and medicinal formulas to develop powder techniques from the ability 22 23.
• Successfully creates Sleep Powder after a month of experimentation with sleep-inducing Grass-type power 23.
• Secretly disperses it while retreating, eventually incapacitating Qian Renxue 24.
• Poison Powder and Stun Spore are proposed applications, not demonstrated techniques in these chapters 22.

Foul-Stench Attack

• Trains Caterpie to release foul gas as a distraction 6.
• Uses the resulting disorientation to strike Yu Tianheng with a wooden stick 6.

Equipment / Weapons / Resources

• Wooden stick — An improvised weapon used to knock Yu Tianheng unconscious during their second duel 6.
• Nuoding-area map — Obtained through Xiao Chenyu for the waterfall search; it provides no successful lead 14 15.
• Spirit Hall certificate — An authentic document listing rank-nine innate Soul Power, issued to facilitate enrollment while hiding his rapid cultivation 13.
• Spirit Hall library access — Bibi Dong permits him to read the entire collection, including confidential poison-making material 20 22.
• Poison Mixing Manual — Provides formulas used in Caterpie’s Sleep Powder training; Yu Xiaochuan recognizes its Seven-Colored Splendor poison as belonging to the Breaking Clan 22 23.
• Awakening Powder — Used after Qian Renxue falls asleep to dispel Sleep Powder’s effect 24.

Relationships

• Caterpie — Martial Soul and training partner. Yu Xiaochuan treats it affectionately and persistently encourages its potential to become Rayquaza 1 8.
• Parents and elder brother — His unnamed parents continue doting on him despite his weak awakening; his elder brother possesses the Blue Lightning Tyrant Dragon Martial Soul 2 12.
• Yu Tianheng — Distant clansman, desk-mate, and rival. Yu Xiaochuan wins all three documented duels; Tianheng remains eager for another match when they part 3 12 17.
• Clan leader — Initially arranges guidance and supplies medicinal resources, viewing Xiaochuan as a useful opponent to temper Tianheng. Later approves his departure for Nuoding Academy 2 5 11 12.
• Yu Xiaogang — Clan uncle and early cultivation benefactor whose repeated adoption demands cause growing friction. Their relationship ends in a wagered duel won by Yu Xiaochuan 2 13 17 18 19.
• Xiao Chenyu — Defeated school rival turned subordinate; obtains maps for Yu Xiaochuan 14 15.
• Ma Xiunuo — Receives his Spirit Hall application and escorts him to Spirit City. Becomes markedly respectful after witnessing his victory over Yu Xiaogang 16 19.
• Bibi Dong — Adoptive mother and patron. Her affection and unrestricted library access give him the resources to continue researching a breakthrough 20 21.
• Qian Renxue — Bibi Dong’s biological daughter and his rival for her attention. Their antagonism leads to a restricted duel, which he wins with Sleep Powder before allowing her to sleep on his lap 20 21 23 24.

Notable Quotes

“Hahaha, life is a journey against the current, and I too am a traveler.” 12

“You said it yourself: there are no trash Martial Souls, only trash Soul Masters. I have a rank-nine Caterpie, and you have a rank-twenty-nine Luo Sanpao. Let’s fight.” 17