Gu Tianxue

Biodata

Feature	Details
Name	Gu Tianxue (古天雪)
Alias(es)	Gu Family Eldest Miss; Tianxue; Madam Qin 345
Gender	Female
Affiliation	Gu Family; administrator of the Ancient Domain and Southern Domain under Lin Yi's reforms 639 695
Occupation/Role	Gu Family leader and martial-arts strategist; later entrusted with governing the two domains in Lin Yi's absence 639 695
Status	Alive; pregnant with Lin Yi's child as of Chapter 695 695
First Appearance	340

Power Progression

Stage / Realm / Level	Chapter	Notes
Non-professional; restricted by Innate Meridian Severance	342	Her constitution initially prevented her from becoming a professional martial artist despite her exceptional martial knowledge.
Half-step Martial Saint	379	Used the Phoenix Heart Fruit, auxiliary spiritual resources, the Legacy Medicine Garden's residual supreme-yang aura, Martial Saint Pills, and the Gu Family's Yin-Yang Bagua Plate to begin a direct breakthrough.
Martial Saint	380	Completed her breakthrough after consuming additional high-grade Martial Saint Pills supplied by Lin Yi; her Innate Meridian Severance was replaced by the Yin-Yang Dao Body.
Martial Saint First Realm—Perfected	407	Refined Red-Orange Light Force supplied by Lin Yi, breaking her Flesh Shackles and perfecting the First Realm.
Martial Saint Seventh Realm	639	Broke through to the Seventh Realm and comprehended the Yin-Yang Domain while taking on greater responsibility for Gu Family affairs.
Eighth-Realm Martial Saint	679	Reached the Eighth Realm shortly before Lin Yi's departure for Starfall Academy.
Strength suppressed in Black Mountain	680	The Black Mountain curse continued targeting Gu Family members, limiting her effectiveness despite her Eighth-Realm cultivation.

Background / History

Gu Tianxue is a direct descendant of the Gu Family, whose “Tian” generation was reputedly decreed by Gu Xianhe to be the clan's most gifted generation. Gu Tianle, the former Gu Family inheritor who became the Wood Sage Spirit, identifies her as his blood descendant and had watched over her because of his bond with her mother. 358

Born with Innate Meridian Severance, Gu Tianxue could not follow the normal martial path. She instead studied the Gu Family's collections from childhood, becoming proficient in external martial arts, Mystic Gate formations, martial theory, and identifying others' cultivation bottlenecks. Her reputation was strong enough that a Martial Saint once lost a debate on martial principles against her. 342

Three years before the Black Mountain expedition, she arranged a nominal marriage to Qin Jian and had him installed as the Seventeenth Tong Pass Garrison Commander as part of her long-term plan to resolve her constitution. When Lin Yi replaced Qin Jian, she quickly recognized that the man before her was an impostor and began investigating him. 342 358

She entered the Black Mountain Secret Realm seeking a means to resolve her constitution and pursue the Martial Saint realm. There, she formed a guarded partnership with Lin Yi while he was operating under Qin Jian's identity. Lin Yi protected her from the secret realm's spatial pressure, gravity curse, and Bone-Eroding Black Wind, while Gu Tianxue provided inherited techniques, formation knowledge, and directions toward the Gu Family's inheritance ground. 360 370 371

In the Legacy Medicine Garden, Gu Tianxue used the Phoenix Heart Fruit and her family's Yin-Yang Bagua Plate to transform her constitution and attempt a direct ascent to Martial Saint. Her breakthrough nearly failed after exhausting her own Martial Saint Pills, but Lin Yi supplied two high-grade pills, allowing her to complete the transformation into the Yin-Yang Dao Body and become a Martial Saint. 379 380

Afterward, her nominal marriage and alliance with Lin Yi developed into a genuine marital and political partnership. She protected his false identity, assisted his recruitment and intelligence efforts, and eventually received the Gu Family Old Ancestor's trust to manage the family's affairs. Her Yin-Yang Dao Body also resonated with Lin Yi's during their joint comprehension of the Yin-Yang Fundamental Diagram, deepening both their relationship and their understanding of the Yin-Yang Domain. 401 465 494 495 639

When Gu Tianxue returned with Lin Yi to Black Mountain as an Eighth-Realm Martial Saint, the curse left by the secret realm still severely suppressed her. She later used her Gu Family blood to open an ancestral Spatial Spirit Treasure and retrieve its surviving books and resources before they disintegrated. 680 686

When Lin Yi prepared to depart for Starfall Academy, he placed the reformed Ancient Domain and Southern Domain under her stewardship, entrusted the Twelve Tong Passes supreme treasure to her protection, and copied several powerful talents to strengthen her. Before leaving, he successfully made her pregnant. 695

Appearance

Gu Tianxue is noted for her refined, noble appearance, fair complexion, long black hair, and striking blue eyes. Her appearance became even more remarkable after her Martial Saint breakthrough. 340 391

• Blue eyes described as clear and autumn-water-like. 342 391
• Usually carries herself with the reserved poise expected of the Gu Family's eldest miss. 350 419
• Her frail constitution was visibly affected by Black Mountain's curse before her transformation. 370 379
• After becoming a Martial Saint, she moves with an ethereal Gu Family lightness skill. 380
• While visiting Blue Star, she adapted readily to modern clothing while retaining her reserved elegance. 495 496

Personality

Gu Tianxue is proud, sharp-minded, and difficult to deceive. She quickly noticed inconsistencies in “Qin Jian,” deduced that he was simultaneously walking the Three-Ladder Path, and repeatedly investigated his concealed identity rather than accepting his explanations at face value. 341 353

She is also secretive and highly goal-oriented. During the Black Mountain expedition, she withheld much of her purpose and knowledge until cooperation became necessary, bargaining with techniques and information to secure Lin Yi's protection. 345 350 361

Though initially haughty and easily provoked by Lin Yi's teasing, she becomes more trusting and openly supportive over time. She teaches him family techniques when he is injured, worries about his safety and reputation, offers him assistance with Yin-Yang Domain comprehension, and accepts major responsibility for the Gu Family and the two domains. 373 418 494 639 695

Gu Tianxue is deeply loyal to Lin Yi once she accepts him as her husband. Despite initially knowing little about his origins beyond his identity as a Descender, she expresses faith in his character and is willing to help him even when doing so could put her standing with the Gu Family at risk. 494 495

Abilities & Skills

Martial Dao Grandmaster

Gu Tianxue possesses the Martial Dao Grandmaster talent, giving her exceptional insight into external martial arts and cultivation. 346

• Identifies martial bottlenecks and offers guidance to other cultivators. 342
• Recognizes clues in combat techniques and rapidly deduces hidden cultivation methods. 353
• Had mastered numerous white-quality external martial arts before entering Black Mountain. 371
• Activated and directed stone warriors in the inheritance chess trial through her martial knowledge and formation control. 371 372

Mystic Gate Formations and Battlefield Command

Her knowledge of Mystic Gate formations makes her a capable tactical commander.

• Planned the stone-warrior chess trial's formations and adapted them as enemy warriors advanced in strength. 371 372
• Used defensive, ambush, and decapitation tactics to dismantle stronger enemy formations. 372
• Shared Gu Family insights into the Three-Step Fusion Method, though Lin Yi judged those notes as theoretical rather than directly practical. 354

Yin-Yang Constitution

Gu Tianxue originally possessed the Golden Talents Yin-Yang Dual Cultivation and Martial Dao Grandmaster, as well as the Purple Talents Innate Meridian Severance and Sense Qi to Find Meridian. Her constitution changed after refining the Phoenix Heart Fruit. 346 379

• Innate Meridian Severance — originally prevented her from becoming a professional martial artist. 342
• Yin-Yang Dao Body — replaced her former constitution after her Martial Saint breakthrough. 380
• Her Yin-Yang Dao Body can resonate with a compatible counterpart, allowing merged auras and accelerated comprehension of the Yin-Yang Domain through the Yin-Yang Fundamental Diagram. 494
• Her special constitution is compatible with dual cultivation and was considered important enough that Grand Saint Granny urged Lin Yi to leave an heir with her. 495 488

Yin-Yang Martial Arts

After becoming a Martial Saint, Gu Tianxue can wield Yin-Yang True Qi in battle.

• Uses the Gu Family's signature lightness skill for rapid, graceful movement. 380
• Manifested an Yin-Yang Giant Hand against a Ji Family Martial Saint. 500
• Comprehended the Yin-Yang Domain after reaching the Martial Saint Seventh Realm. 639
• Received several copied Red Talents from Lin Yi, including Qiankun Yin-Yang Dharma Body, to improve her aptitude for cultivating the Qiankun Yin-Yang Domain. 695

Gu Family Techniques

• Circulating Heaven Qi Art — a Golden External Technique shared with Lin Yi as payment for carrying her through Black Mountain. 361
• Three Saints Unity Art — a Gu Family restorative external skill that nourishes essence, energy, spirit, and breath; she taught it to Lin Yi after his Martial Spirit was destroyed. 373
• Purple-grade archery external skill — provided to Lin Yi in exchange for seeing his true appearance. 373
• Yin-Yang Fundamental Diagram — although the copy used by Lin Yi originated from Gu Xianqin's legacy, Gu Tianxue's Yin-Yang Dao Body allows her to jointly comprehend its principles with him. 494

Gu Family Bloodline

• Her Gu Family blood can serve as the catalyst needed to open certain ancestral Spatial Spirit Treasures. 686
• She helped Lin Yi retrieve the contents of Gu Xianhe's Spatial Spirit Treasure, including Void Pouches, damaged Demigod Artifacts, and ancient books. 686

Limitations

• Black Mountain's curse specifically targets Gu Family members, previously leaving her unable to withstand the secret realm's pressure without Lin Yi's protection. 358 370
• The curse remained potent enough to suppress her even after she reached the Eighth-Realm Martial Saint stage, forcing her to withdraw into Lin Yi's Spirit Vine World during the Black Mountain crisis. 680
• Her direct Martial Saint breakthrough placed immense strain on her body because her physical foundation had not transformed alongside her True Qi. 379

Equipment / Weapons / Items

• Yin-Yang Bagua Plate — Gu Family heirloom containing the accumulated True Qi essence of successive Gu Family Martial Saints; it can be used by one who condenses the Yin-Yang Dao Body. 380
• Frost Ruyi — a Martial Dao Spirit Treasure she gifted to Lin Yi at Martial Saint City's gate, along with precious pills. 426
• Phoenix Heart Fruit — consumed during her constitutional transformation and Martial Saint breakthrough. 379
• Twelve Tong Passes supreme treasure — entrusted to her by Lin Yi for protection and governance of the two domains; Lin Yi strengthened her talents so that it could acknowledge her. 695

Relationships

• Lin Yi — Initially traveled with him while he used Qin Jian's identity; their guarded alliance and nominal marriage developed into a genuine marriage marked by mutual protection, shared Yin-Yang cultivation, political cooperation, and eventual parenthood. 360 401 494 495 695
• Gu Yan — Her uncle and a longtime guardian; he accompanied her to the Black Mountain Secret Realm and later received a Superior Martial Saint Pill from Lin Yi. 347 515
• Gu Tianle / Wood Sage Spirit — Her blood ancestor, who had secretly watched over her because of his connection to her mother and asked Lin Yi to keep her safe in Black Mountain. 358
• Grand Saint Granny — A close elder who treated Gu Tianxue as her granddaughter, confirmed that her cold-constitution problem had been resolved, and urged her to consummate her marriage with Lin Yi. 463 488
• Gu Family Old Ancestor — Entrusted Gu Tianxue with the Gu Family's affairs before entering seclusion; she was later rescued alongside Grand Saint Granny during the Black Mountain crisis. 639 680
• Xiao He — Her maid, who is fiercely protective of her and suspicious of Lin Yi's behavior under the Qin Jian identity. 341

Story Role / Major Arcs

Black Mountain Secret Realm

Gu Tianxue drives the expedition into Black Mountain because she seeks the spiritual resources and inheritance needed to overcome Innate Meridian Severance. Her knowledge of the Gu Family's legacy and the inheritance trial is essential to reaching the Legacy Medicine Garden. 350 371 379

Martial Saint Breakthrough

She transforms her constitution with the Phoenix Heart Fruit and uses the Gu Family's accumulated Martial Saint True Qi to attempt an unprecedented direct breakthrough. Lin Yi's protection and pills allow her to survive the final stage and emerge as a Martial Saint. 379 380

Gu Family and Tong Pass Politics

Following the Black Mountain expedition, Gu Tianxue helps stabilize Lin Yi's standing in the Ancient Domain, protects his false identity, gathers intelligence, and aids his efforts to recruit powerful families and obtain domain techniques. 401 465

Yin-Yang Fundamental Diagram

Gu Tianxue jointly studies Gu Xianqin's copied Yin-Yang Fundamental Diagram with Lin Yi in the Spirit Vine World. Their Yin-Yang Dao Bodies resonate and merge their auras, helping both of them accelerate their comprehension of the Yin-Yang Domain. 494 495

Return to Black Mountain

Gu Tianxue accompanies Lin Yi back into the Black Mountain Secret Realm after reaching the Eighth-Realm Martial Saint stage. The Gu Family-targeted curse nonetheless suppresses her strength, after which she assists in opening an ancestral Gu Family Spatial Spirit Treasure with her blood. 680 686

Stewardship of the Two Domains

After the Gu Family Old Ancestor enters seclusion, Gu Tianxue assumes responsibility for the family. Lin Yi later entrusts her with governing the Ancient Domain and Southern Domain while he leaves for Starfall Academy, leaving the Twelve Tong Passes supreme treasure in her care and strengthening her with copied talents. 639 695

Notable Quotes

“With me here, I won't let your false identity be exposed...” 401

“I have succeeded...” 380