Big Fat Fish

Biodata

Power Progression

Big Fat Fish’s evolution follows Jiang Wangxuan’s cultivation and the resources he supplies; the stages below describe her development rather than independently attained cultivation realms 6 46.

Background

In Jiang Wangxuan’s previous life, he spent heavily on equipment to assemble a local AI using open-source resources. Sparks and lightning interrupted the attempted trial run, after which he found himself in another world. Big Fat Fish, the AI he had failed to assemble, accompanied him, with her life linked to his 6.

She offered little practical help during his early cultivation. Once his spiritual sense manifested, however, she began self-iteration inside his Rising Yang Mansion. His later entry into Qi Refinement established a mutually beneficial cycle: she consumed his true essence to improve her intelligence while returning increasingly purified essence to him 6.

Appearance

• Avatar: A blue-and-white whale girl approximately half a person’s height, with a large tail and a slender waist 6 11.
• Clothing: Appears in a maid outfit and changes into an elementary-schooler’s suit with black-framed glasses when presenting a deduction 6.
• Later distinguishing feature: A pitch-black shadow acquired after consuming the black sun’s fragments; it houses the recovering Black Tide 30 35.

Personality

Big Fat Fish is argumentative, playful, and openly resistant to overwork. She calls Jiang Wangxuan a foolish master or an exploitative capitalist, while he accuses her of freeloading and spending his true essence on games. She enjoys theatrical costumes, references to their previous world, and bargaining for larger meals of moonlight 6 11 35.

Her appetite frequently overrides caution. She consumes unfamiliar substances before asking permission and immediately seeks rewards after helping Jiang Wangxuan survive danger. Nevertheless, she fiercely treats the Rising Yang Mansion as their shared home and attacks intruders who threaten it 19 30 32 35.

Her calculations favor eliminating uncertainty, even when doing so conflicts with Jiang Wangxuan’s moral judgment. She repeatedly urged him to kill Fang Lin because her simulations identified him as a dangerous variable; Jiang Wangxuan rejected the idea that the world could be governed by numbers alone 25 53.

Abilities & Skills

True Essence Purification

Big Fat Fish consumes true essence as a resource for intellectual evolution and produces denser, purer spiritual essence in return 6.

• Her refinement of Frost Osmanthus Moon Essence helped Jiang Wangxuan’s essence develop into crystal-clear Luminous White Moonlight at Qi Refinement Perfection 6.
• The silver-white moon disc initially contained Lunar Essence beyond her ability to draw out without Jiang Wangxuan’s permission 11.
• Her complete post–Foundation Establishment evolution did not strengthen this ability, and it could not directly refine an Immortal Foundation 46.

Cultivation-Method Analysis and Optimization

She builds a database from cultivation methods, texts, and observed techniques, then uses calculation and practical monitoring to decipher or improve them 6 13 46.

• Modified the Autumn Moon Frost Osmanthus Qi Condensation Method, replacing its frost-osmanthus chill with pure, gentle moonlight essence 6.
• Initially improved Foundation Establishment methods only by monitoring Jiang Wangxuan’s own practice and repeatedly adjusting it through trial and error 46.
• After her complete evolution, could independently analyze other lineages, record enemy Law Techniques, and run background processes to develop improved versions 46.
• Entered Jiang Jinyi’s cultivation process to monitor the Dui Metal Aperture Heart Qi Gathering Instruction, helping identify its dangerous restriction around the Baihui route 47.

Her estimated processing times after that evolution were 46:

Data Stream

Data Stream protects the Rising Yang Mansion by converting hostile spiritual intrusions into something Big Fat Fish can process and discard 19.

• Digitizes invading demons or evil entities, places them in a “trash heap,” and formats them 19.
• Removed blood resentment and attacked the bloody compound eye created by the Spider Mother’s Punishment Sacrifice curse, easing its effects on Jiang Wangxuan 19.
• First appeared before her broader computational evolution was complete 19 46.

Black Tide Control

After eating the black sun’s residue, Big Fat Fish gained access to the Black Tide through her shadow 30 33.

• Unleashed it against the contaminated Crimson Moon when broom strikes and punches failed to break the moon phase 33.
• Could suppress the recovering Black Tide after Jiang Wangxuan’s Foundation Establishment 35.
• Warned that her control might fail if its recovery outpaced her improvement. Because it originates in Jiang Wangxuan’s bloodline, it grows with him and cannot simply be eradicated 35.

Combat Assistance

• Manages the Clear Water cultivation method used with Jiang Wangxuan’s flood dragon spirit in battle 19.
• Fights intruders inside the Rising Yang Mansion using her avatar’s fists, headbutts, and manifested cleaning tools 19 33.
• Her repeated blows forced the Crimson Moon downward but could not destroy its stable moon phase without another approach 33.

Predictive Modeling and Limitations

• Consistently identified Jiang Wangxuan’s Spiritual Qi rampage and the Black Tide as evidence of an awakened True Lord bloodline; she also predicted renewed activity after his return home 6 10.
• Could not detect or access his mysterious dream experience, despite remaining conscious within the Rising Yang Mansion 11 12.
• Failed to make her models of Huaqi’s fate-bestowing and investment arrangements function successfully 51 52.
• Lacked a reference model for raising the Autumn Moon Osmanthus Immortal Foundation into the Rising Yang Mansion to attain a Divine Ability 53.
• Could neither accompany Jiang Wangxuan into the space of the Stream Dream Railing Notes nor enter Fahuan Hall afterward 54.

Equipment / Items

• Manifested computer and screens — Used for games, calculations, and constructing models inside the Rising Yang Mansion 6 51.
• Broom, mop, and trash can — Tools used to represent her removal of spiritual contamination; the broom also serves as a weapon 19 33.
• “I Am a Genius Immortal Cultivation System!” — A proposed aid for Jiang Jinyi that Big Fat Fish claimed could guide her to Foundation Establishment within ten years. Jiang Wangxuan rejected the proposal and discovered more than a hundred copies hidden in her food bowl 46.
• Heavenly Origin Returning Soul Full Moon One Method — An ungraded Grand Yin rite concerning Full Moon’s perfection and Waning Moon’s decline, entrusted to her by Jiang Wangxuan 54.

Relationships

• Jiang Wangxuan — Life-linked master, cultivation partner, and constant sparring partner in verbal disputes. Despite their insults, he trusts her battlefield judgment and regards her as essential support on his Dao path 6 35 40.
• Jiang Jinyi — Watched her grow up and retains memories of her childhood. Praises her affection for her brother and helps investigate both her bloodline and cultivation method 46 47 48.
• Fang Lin — Values his knowledge as material for her database but distrusts his lack of boundaries and the secrets surrounding him. Her insistence that he should be killed is overruled by Jiang Wangxuan 8 17 25.
• Black Tide — A dangerous bloodline power attached to her shadow, which she suppresses and deploys. Its continued activity remains troublesome: it later consumes more than half of a model she had constructed 35 52.

Story Role / Major Arcs

Luzhou Bloodline Investigation

• Her diagnosis of an awakened True Lord bloodline prompts Jiang Wangxuan to investigate his family’s origins before attempting Foundation Establishment 6.
• Compiles local legends and county gazetteers into a database. The initial legends prove poorly focused, but narrowing the search helps identify the Yang Clan’s former territory as a lead 12 13.
• Assists searches around eastern and southern Luzhou and questions whether Jiang Dezhao’s unexpected Horn Wood Law Power reflects an activated bloodline 14.

Jinping Mountain

• Protects Jiang Wangxuan from the spider swarm’s blood curse through Data Stream 19.
• Deduces that True Person Shouhui made the secret realm a prison for the demonic tree, intending to create a new mountain spirit that could suppress it 29.
• Consumes the black sun’s shattered residue after Jinping Mountain suppresses it, acquiring the shadow that later allows her to wield the Black Tide 30.

Foundation Establishment Crisis

• Returns from her temporary shutdown to confront the Crimson Moon invading the Rising Yang Mansion 32.
• Uses the Black Tide to wear down the moon while Jiang Wangxuan studies and copies its waxing-crescent phase 33.
• After his successful breakthrough, reports that the Black Tide has recovered and produced the sixth-grade True Explanation of Sloughing Wood, Crossing Tribulations, and Transforming Spirits. Jiang Wangxuan seals the method in her database rather than examine it 35.

Expanded Analysis and Grand Yin Inheritance

• Following her complete evolution, identifies Cicada Molting Under the Moon, Seeking Purity Epistle as a Grand Yin method rather than a Cold Qi method, tentatively judging it sixth-grade 46.
• Helps confirm that Jiang Jinyi shows no observed reaction to the Black Tide and analyzes the flaw in her Dui Metal cultivation method 47.
• Assesses Jiang Wangxuan’s choice of Immortal Foundation manifestation during his visit to Huaqi, with her calculations narrowly favoring Autumn Moon Osmanthus 53.
• Is repeatedly repelled by Fahuan Hall after Jiang Wangxuan brings it home. He restrains her angry attempt to retaliate with a conjured rocket launcher, then gives her the Heavenly Origin Returning Soul Full Moon One Method 54.

Notable Quotes

“You just want me to spend twenty-five hours a day calculating cultivation methods and purifying true essence for you. You capitalist who deserves to be hanged from a streetlamp.” 6

“Get out of my home, now!” 32

“I'm its big boss now! But if I can't improve as fast as this fellow, things might not stay that way!” 35