Xiao Yu

Biodata

Feature	Details
Name	Xiao Yu (小雨)
Alias(es)	Bai Xiaoyu; Miss Bai; Lord of the Nine Corpse Tower; Building Guardian; Wu (“shaman”)
Species/Race	Female ghost who can manifest through spirit fragments and inhabit corpse bodies
Gender	Female
Affiliation	Nine Corpse Tower; the Four Ba Kingdom War Souls
Occupation/Role	Lord and true Building Guardian of the Nine Corpse Tower; suppressor of the Abyss Ghost Cave and its Great Fiends
Status	Undead; continues reinforcing the Nine Corpse Tower's seal
First Appearance	Chapter 1 — discovered as Jiang Ning's anatomy-class corpse

Power Progression

Stage / Realm / Level	Chapter	Notes
Primordial-soul fragment manifestation	169	A fragment of Xiao Yu's primordial soul manifests through the Black Umbrella after Jiang Ning's blood activates its spirit formation. She reveals that she had lost one of her bodies while injured.
Corpse merger	614	Jiang Ning's blood awakens an identical corpse from a bronze coffin; Xiao Yu merges with it to gain greatly increased power against the evil-ghost horde.
Strengthened true-spirit manifestation	1238	With the Nine Corpse Tower's seal more stable, Xiao Yu can manifest far more power than before, effortlessly crippling the Demon Manifestation Realm Berserk Rabbit Demon.
Physical corpse deployment	1934	Xiao Yu leaves the tower in a corpse body, allowing Jiang Ning to feel the physical touch of her skin while she accompanies him to Carefree Tower.
Blood-sigil release	2000	Her eyes turn scarlet and a blood sigil appears on her forehead. This release destroys the Eye of Intimidation, repels two Spirit Kings, and exposes that she had concealed much of her strength.
Great Fiend seal reinforcement	2424	Xiao Yu descends amid a crisis, seals a Great Fiend-possessed red-haired zombie with a palm strike, and stabilizes the Great Fiend's seal.
Purple Luminary lightning control	2468	Using the Black Umbrella, Xiao Yu disrupts Gloomy Nine Thunder Princess's control of purple lightning and channels a dense purple lightning arc herself.
Spirit-body depletion	2472	Prolonged manifestation at the Abyssal Moon Soul Shrine exhausts both her true body's power and the Black Umbrella's formation energy, preventing further appearances until the formation is replenished.
Renewed true-spirit manifestation	2574	Xiao Yu appears again as a true spirit rather than in her physical corpse body.
Twin-Qi toxin extraction	2575	Xiao Yu combines Black Spring Water with violet lightning from the Eight-Foot Jade Magatama to draw Purple Ultimate Nether Saliva from Taoist Song while shielding him from the destructive energies. The treatment causes her spirit to grow faint.

Background / History

Xiao Yu dated Jiang Ning for more than a year before he discovered her corpse in his final anatomy class. During their relationship, she imposed unusual rules: they met on the first and fifteenth days of the lunar month, she avoided red clothing and photographs, and she collected coins minted in 2018. The anatomy-class corpse had already been in storage for seven years, despite Jiang Ning having seen Xiao Yu only a week earlier. It was a substitute body compatible with her fate, not one of her eight reincarnated bodies; it had gradually come to resemble her before being contaminated by the Great Fiend's energy. 1 2 637

After her death, Xiao Yu continued protecting Jiang Ning from the shadows. She appeared with her Black Umbrella near the school, frightened hostile ghosts away from him, and later boarded the hearse-bus with him. After leaving at the Medical University stop, witnesses saw armored figures with iron chains escort her back into the school. Jiang Ning initially believed she had been captured, but Xiao Yu later identified the figures as her own Ba Kingdom War Souls, who had come to welcome her back. 18 91 641 642

Xiao Yu eventually revealed that she had been injured and lost one of several bodies, forcing her to stay away from Jiang Ning to prevent the Great Fiend from observing him. Her early appearances were only fragments of her primordial soul, called forth through the Black Umbrella with Jiang Ning's blood. 169

Her connection with Jiang Ning predates their current lives by over 3,600 years. Eight of the nine corpses within the Nine Corpse Tower are her reincarnated forms; Jiang Ning was the youngest High Priest in Shang Dynasty history, while Xiao Yu is revered by the Ba Kingdom War Souls as a Wu, or great shaman priestess. 640 642

Xiao Yu cultivated eight true forms over eight lifetimes, while her ninth life failed. Her immense accumulated power and the Nine Corpses' protection place her at the pinnacle of modern ghost cultivation. 1842 2465

Xiao Yu is not merely imprisoned within the tower: she is its true Building Guardian and Lord, tasked with suppressing the Great Fiend beneath it. The burden of maintaining that seal restricts how long she can remain away from the tower. 1012 2017

The Nine Corpse Tower is also a Beyond-the-Boundary Land beyond the Netherworld Bureau's authority. Xiao Yu can offer it as a refuge to protect allies from even Netherworld Envoys when necessary. 1845

Xiao Yu and Jiang Ning's grandfather knew of each other's existence but had never met. A descendant of the Ba Kingdom and the current Grand Shaman, he passed an item to Third Master, who delivered it to Xiao Yu. This prompted her to leave the tower and led to her first meeting with Jiang Ning after he entered university. She subsequently helped extend Jiang Ning's life until contamination of her substitute corpse made direct contact too dangerous. 2137

Appearance

Xiao Yu is a tall, slender woman whose beauty and calm presence contrast sharply with her cold corpse aura and overwhelming yin energy. She most often appears in white garments while carrying a Black Umbrella. 18 458

• Long black hair, often described as cascading like a waterfall. 458 2462
• Fair, delicate features and a small black tear mole at the corner of her left eye. 18 2411
• Commonly wears flowing white robes or a long white dress. 458 1238
• Carries a Black Umbrella, the vessel used for many of her manifestations. 169 458
• Her body is cold and may carry a faint formaldehyde scent. 127 168
• During her blood-sigil release, her eyes become scarlet and a blood sigil appears on her forehead. 2000
• Her manifested spirit can become faint or translucent as her power is exhausted. 2472 2575

Personality

Xiao Yu is gentle, affectionate, and attentive toward Jiang Ning. His injuries immediately provoke fear, grief, and fury in her; she repeatedly prioritizes stabilizing him or killing whoever harmed him. 168 458 1763

Despite her immense strength, she is careful about exposing her secrets. She avoids direct contact with the Secret Bureau because she suspects that a Great Fiend spy may be hidden within it, and she entrusts Jiang Ning to relay her position instead. 1361

After the Secret Bureau's internal traitors are exposed, Xiao Yu agrees to assist Daoist Long Ming by screening personnel under his command for Great Fiend infiltration. 1768

Her duty to the Nine Corpse Tower is as important to her as her relationship with Jiang Ning. She willingly returns to reinforce its seal after major battles, even when it means she cannot remain by his side. 2017

Xiao Yu also values quiet human experiences. She enjoys rain, tastes restaurant food through offerings, laughs while watching comedy programs, and eventually agrees to take a photograph with Jiang Ning despite once refusing to be photographed. 1274 1940 1943 2016

She is willing to expend substantial spiritual power to protect Jiang Ning's loved ones, including Taoist Song when a deadly poison brings him close to death. 2575

Abilities & Skills

Yin Energy Manipulation and Ghost Combat

Xiao Yu possesses overwhelming yin energy that can suppress, scatter, or destroy ghosts and cultivators.

• Emits freezing waves of yin energy capable of driving hostile ghosts into panic. 458
• Uses palm strikes that can break trees at range, kill hostile cultivators, and destroy large formations of ghost soldiers. 273 1973
• Employs rapid phase shifting to move through enemy groups and strike from multiple positions. 458
• Can kill powerful enemies with single attacks, including Cloak Old Ghost and the Berserk Rabbit Demon. 1238 1763
• Her yin energy can stabilize Jiang Ning's injuries and help suppress poison. 168 1012
• Can immobilize and draw back fleeing ghost cultivators through remote manipulation of yin energy. 1947
• Sealed a Great Fiend-possessed red-haired zombie with a palm strike. 2424

Spirit Manifestation and Corpse Bodies

Xiao Yu can manifest through the Black Umbrella or inhabit one of her multiple identical corpses.

• Her Black Umbrella can be activated with Jiang Ning's blood to summon a primordial-soul fragment. 169
• She possesses multiple bodies; an awakened corpse can merge with her spirit to greatly increase her combat power. 169 614
• Her true spirit can be substantially stronger when the Nine Corpse Tower's seal is stable. 1238
• Sustaining a manifested spirit body consumes power from her true body and the Black Umbrella's formation energy. 2472
• She cannot stay away from the Nine Corpse Tower indefinitely. 1064 2017
• Her corpse form can be perceived by ordinary people, while some spirit manifestations are visible only to Jiang Ning. 1273 2137
• After an earlier manifestation depleted the Black Umbrella's formation energy, she later appears again as a true spirit rather than in a corpse body. 2472 2574

Sealing and Domain Destruction

As the Nine Corpse Tower's guardian, Xiao Yu maintains its seal and can eliminate large-scale supernatural threats.

• Commands the Four Ba Kingdom War Souls, who recognize her as Wu. 641 642
• Identifies and absorbs source power from the Yin Heavenly Keystone. 1420 1421
• Destroyed the Carefree Tower Ghost Domain after the group evacuated, preventing the Great Fiend from rebuilding its forces there. 2013
• Can sense hostile yin and baleful energy over distance, allowing her to locate allies and enemies. 1239
• Stabilized the Great Fiend's seal after suppressing a Great Fiend-possessed red-haired zombie. 2424
• Can shelter allies within the Nine Corpse Tower, a Beyond-the-Boundary Land beyond the Netherworld Bureau's control. 1845

Soul, Artifact, and Lightning Control

Xiao Yu can control spiritual artifacts and manipulate supernatural energy sources.

• Uses the Soul-Seizing Art to capture ghosts. 977
• Activates the Nine Nether Soul-Devouring Wheel without reciting an incantation. 1844
• Recognizes the Eight-Foot Jade Magatama as a fragment of a Purple Luminary Crystal. 2468
• Disrupts an enemy's lightning control and channels dense purple lightning through the Black Umbrella. 2468
• Once controlled the complete Nine Luminaries Crystals, granting her exceptional knowledge of their fragments and their uses in suppressing the Abyss Ghost Cave. 2468
• Uses the Eight-Foot Jade Magatama to summon violet lightning during Taoist Song's treatment, controlling it alongside the Black Spring Water without allowing either force to destroy him. 2575

Healing and Toxin Extraction

Xiao Yu can combine spiritual power with dangerous supernatural energies to treat otherwise fatal conditions.

• While treating Taoist Song's advanced Purple Ultimate Nether Saliva poisoning, she isolates him from the deathly energy of the Black Spring Water and the magatama's violet lightning while drawing poison out of his body. 2575
• Zhao Liansheng recognizes the treatment as resembling the Heavenly Doctor's legendary Twin-Qi Purity Separation and Toxin Extraction Method. Xiao Yu's spirit grows faint as the treatment consumes her power. 2575

Limitations

• Sunlight harms Xiao Yu, and she uses her Black Umbrella to avoid direct exposure. 1940
• She cannot enter water, despite her otherwise overwhelming strength. 274
• Certain ritual artifacts and anti-yin formations can restrain or drain her power. 1931 1978 1990
• Her blood-sigil release requires recuperation afterward. 2017
• Extended spirit manifestation can exhaust the Black Umbrella's formation energy and drain her true body, leaving her unable to manifest again until it is replenished. 2472
• Sustained use of her power for toxin extraction causes her manifested spirit to grow faint. 2575

Equipment / Weapons / Items

• Black Umbrella — Her principal manifestation vessel; Jiang Ning can activate it with blood to summon her spirit. Its strengthened formation can incapacitate numerous onmyoji, but repeated use heavily drains its energy. 169 458 2462 2472
• Phoenix-Pattern Jade Pendant — A pendant Xiao Yu gave Jiang Ning and does not reclaim. 641
• Yin Spring — A life-essence treasure Xiao Yu provides to strengthen vitality and aid recovery. 1274 1765
• Phantom Moon Cloak — A seventy-two-talisman cloak gifted to Jiang Ning; resists water and fire and conceals life force when activated. 1286
• Sunny-Sweeper Maidens — Protective dolls gifted to Taoist Song and Uncle Yu; activated with blood in a critical moment. 1939
• Eight-Foot Jade Magatama — A Purple Luminary Crystal fragment entrusted to Jiang Ning after Xiao Yu's spirit body reaches its limit. She later uses it to generate violet lightning for Taoist Song's toxin extraction. 2472 2575

Relationships

• Jiang Ning — Her boyfriend and reincarnated counterpart. Xiao Yu has guarded him through multiple lives, while he remains committed to freeing her from the Nine Corpse Tower's burden. 127 633 640
• Jiang Ning's Grandfather — The current Ba Kingdom Grand Shaman and a Mortal-Realm Patrolman. He and Xiao Yu knew of each other without ever meeting; through Third Master, he passed her an item that led to her first meeting with Jiang Ning. 2137
• Taoist Song — Jiang Ning's master. Xiao Yu respects him, regards him as better suited to guide Jiang Ning into cultivation, and provides Yin Spring to aid his vitality. When Purple Ultimate Nether Saliva threatens his life, she undertakes a power-intensive treatment using Black Spring Water and the Eight-Foot Jade Magatama. 1274 1765 2575
• Uncle Yu — A trusted elder in Jiang Ning's circle. Xiao Yu gifts him a Sunny-Sweeper Maiden for protection. 1939
• Four Ba Kingdom War Souls — Her armored subordinates and guardians. They address Xiao Yu as Wu and acknowledge Jiang Ning as Xi. They were the figures whom hearse-bus witnesses mistook for captors dragging her back to school. 641 642
• Third Master Zhang — A subordinate entrusted to guard the Nine Corpse Tower when Xiao Yu leaves it. He also conveyed an item from Jiang Ning's grandfather to her before she first met Jiang Ning. 1273 2137
• Daoist Long Ming and the Secret Bureau — Potential allies whom Xiao Yu initially distrusts because of possible Great Fiend infiltration. After internal traitors are uncovered, she agrees to help Long Ming screen his personnel. 791 1361 1768
• Carefree Tower Empress — A major enemy who attempts to use Abyssal Demon Sigils and Great Fiend Eyes to restrain Xiao Yu. 1989 1990 2001
• Gloomy Nine Thunder Princess — A Nine Chrysanthemum Sect ghost cultivator who attacks Xiao Yu with Purple Luminary Crystal-powered lightning, only for Xiao Yu to seize control of the lightning. 2467 2468
• Zhao Liansheng — A descendant of the Heavenly Doctor who witnesses Xiao Yu treating Taoist Song and recognizes the method's resemblance to his family's legendary toxin-extraction technique. 2575

Story Role / Major Arcs

Experimental Building and Nine Corpse Tower

Xiao Yu's apparent death initiates Jiang Ning's involvement with ghosts and the Experimental Building. Her concealed protection, forced return to the school, and eventual revelation as the Nine Corpse Tower's guardian transform her from a mysterious deceased girlfriend into the center of Jiang Ning's long-term mission. Jiang Ning later learns that the apparent forced return was a misunderstanding: her armored War Souls had come to welcome her back. The anatomy-class corpse was likewise a contaminated substitute body, rather than one of her eight reincarnated forms. 1 91 637 640 642 1012

Protector of Jiang Ning

When summoned through the Black Umbrella, Xiao Yu repeatedly turns hopeless battles around. She destroys water ghosts, kills Leng Qingyu, saves Taoist Song and Jiang Ning, and later executes Cloak Old Ghost after he injures Jiang Ning. 273 458 1009 1763

Carefree Tower Expedition

Xiao Yu accompanies Jiang Ning to Carefree Tower in a corpse body and takes command during its most dangerous battles. She demolishes ghost soldiers, destroys Great Fiend Eyes, reveals her blood-sigil power, confronts the mutated Carefree Tower Empress alone, and ultimately annihilates the Ghost Domain. 1935 1973 2000 2001 2013

Later Assistance

After returning to the Nine Corpse Tower, Xiao Yu continues serving as Jiang Ning's strongest ally. She answers calls to help save Taoist Song, protects the group during conflicts involving the Nine Chrysanthemum Sect, and guides Jiang Ning through a breakthrough to the mid-Spiritual Wisdom Realm. 2411 2462 2472

She later manifests again as a true spirit when Taoist Song's Purple Ultimate Nether Saliva poisoning becomes critical. Using the Black Spring Water and the Eight-Foot Jade Magatama, she begins extracting the poison while shielding him from the treatment's destructive energies, at considerable cost to her own power. 2574 2575

Qilian Mountains and Abyssal Moon Soul Shrine

Xiao Yu descends during the Qilian Mountains crisis to seal a Great Fiend-possessed red-haired zombie and stabilize the threatened seal. Later, Jiang Ning summons her at the Abyssal Moon Soul Shrine, where she overwhelms the Nine Chrysanthemum Sect's onmyoji, withstands the Nine Chrysanthemum Magatsuhi Lord, disrupts Gloomy Nine Thunder Princess's lightning, and secures the Eight-Foot Jade Magatama before her spirit body dissipates. 2424 2462 2465 2468 2472

Trivia

• Xiao Yu initially hated being photographed, but later asks Jiang Ning to take a photo with her so he will have a memory of her. 1 2016
• She likes rain and can walk through heavy downpours without a drop touching her. 1274 1950
• Other people cannot always perceive Xiao Yu when she manifests beside Jiang Ning. 2137

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