Xu Yinyin

Biodata

Feature	Information
Name	Xu Yinyin (徐茵茵)
Gender	Female
Affiliation	Cloud Heaven Sword Sect; Law Enforcement Hall
Occupation / Role	Yun Zishan's only personal disciple; Law Enforcement Hall disciple; part-time assistant at Myriad Things Come
Status	Active
First Appearance	Chapter 9

Power Progression

Stage / Realm / Level	Chapter	Notes
Foundation Establishment, Late Stage	14	Reveals her cultivation to Qiao Bin; the sharpness of her aura forces even the Core Formation-stage Qiao Bin back.
Golden Core / Core Formation	14	Forms a Golden Core overnight after reflecting on Yang Ning's advice about guiding True Qi “one stream at a time” and gathering it in the dantian. Her foundation is later described as solid.

Background / History

Xu Yinyin is Yun Zishan's only direct disciple, making her distinct from Law Enforcement Hall members such as Qiao Bin, who are nominal disciples and address Yun as Hall Master rather than Master. Yun Zishan keeps her training exceptionally strict, and Yinyin has undergone combat-oriented instruction since joining the sect. She has completed monthly Mission Hall training missions, destroyed bandit lairs, and killed hundreds or thousands of criminals. 9 28 99

She first accompanies Yun Zishan to observe Yang Ning's renovated interrogation room, where the unfamiliar technology immediately captures her attention. After speaking privately with Yang Ning, she becomes fascinated by the unusual goods sold at Myriad Things Come and accepts a part-time position there in exchange for discounts. 9 11 12

Yang Ning's explanation of patient, flowing cultivation helps her overcome her Foundation Establishment bottleneck. By the next morning, she has formed a Golden Core, confirming her reputation as a Law Enforcement Hall prodigy. 14

Appearance

Xu Yinyin is a twenty-year-old young cultivator, about half a head shorter than Yun Zishan. She is frequently associated with pink sword light and a pink spiritual sword. 9 14 121

• Lively, bright eyes and an expressive face. 9 11
• Small tiger fangs, which she shows when smiling playfully. 9 16
• Usually wears Law Enforcement Hall attire while on duty. 36
• Wields a spiritual sword that emits pink light. 121
• Carries a Storage Bag. 62

Personality

Xu Yinyin is lively, inquisitive, and openly enthusiastic about unfamiliar things. During the interrogation of a Demonic Cult spy, she is far more captivated by microphones, VR goggles, and other modern devices than intimidated by the setting. Her curiosity about Myriad Things Come leads her to become Yang Ning's assistant despite already receiving a generous personal-disciple allowance. 9 11 12

She is respectful toward sect hierarchy and Yun Zishan's rules, but can be playful and mischievous with people she trusts. Her formality toward Qiao Bin contrasts with her teasing behavior around him, while her negotiations on Yang Ning's behalf show both persistence and resourcefulness. 9 16

Yinyin is proud of the Law Enforcement Hall and deeply admires her master’s work. She is also courageous around violence and death, treating corpses as part of her duties rather than something to fear. 28

Her affection for Yang Ning develops from curiosity and admiration into steadfast devotion. She initially hesitates to approach him because of her upbringing and the difference between a cultivator and a mortal, but later openly plans a future with him, confesses her love, and offers all future sect rewards in exchange for a chance to resolve his lifespan problem. 64 143 145 154

Abilities & Skills

Golden Core Cultivation

Xu Yinyin is a gifted cultivator whose progress outpaces Qiao Bin despite his own recent breakthrough. Her Golden Core was formed through her own cultivation rather than external aids. 14 129

• Possesses sharp, fierce spiritual pressure. 14
• Can fly by sword light. 36 130
• Channels True Qi through both her sword and footwork during combat. 122
• Demonstrates a stable Core Formation foundation. 129

Qingxia Sword Art

After her Golden Core stabilizes, Yun Zishan personally teaches Xu Yinyin the Qingxia Sword Art, a powerful inheritance of Qingxia Fairy. By the time of her intensive training, she has begun grasping its essence and learns at a pace that even impresses Yun Zishan. 87 108

• Has been taught the first fifteen forms. 121
• Trains through demanding life-or-death-style sparring with Yun Zishan. 121 122
• Her master’s instruction is harsh but carefully controlled; Yinyin is exhausted after practice but not truly injured. 99 123

Smoke Haze Shadow Sweep

A Qingxia Sword Art technique that creates distractions through dust, sword light, or deliberately released True Qi. 122 125

• Produces layered sword shadows through rapid vibration of the sword tip. 122
• Uses environmental interference to obscure an opponent’s senses. 125
• Can be combined with movement techniques and sustained pursuit. 122
• Yang Ning considers adapting its disruptive principles with auxiliary equipment for the Sect Grand Competition. 125

Jixia Returning to Sheath

The sixth form of the Qingxia Sword Art, used by Xu Yinyin as a concealed follow-up strike. 122

• She feigns abandoning her sword, attacks with its sheath, then recalls the embedded sword for the true killing blow. 122
• Successfully combines the technique with Smoke Haze Shadow Sweep during her spar with Yun Zishan. 122
• Demonstrates her growing willingness to exploit openings and fight without hesitation. 122

Law Enforcement Hall Experience

Xu Yinyin is familiar with Law Enforcement Hall facilities, procedures, and evidence handling. 28 49

• Escorts Yang Ning through the hall using her status as Yun Zishan's personal disciple. 12
• Knows the morgue’s storage and corpse-preservation procedures. 28
• Receives the poisoned needle from Yang Ning's assassination attempt as formal evidence. 49
• Pledges to protect Yang Ning and remains vigilant after the assassination attempt. 28 49

Equipment / Weapons / Items

• Pink spiritual sword — Her primary weapon; can be controlled remotely in combat. 121 122
• Sword sheath — Used offensively as part of her Jixia Returning to Sheath combination. 122
• Storage Bag — Used to carry the poisoned needle's evidence box. 62
• Poisoned silver needle — Evidence from the assassination attempt on Yang Ning, formally transferred to her Law Enforcement Hall custody. 49

Relationships

• Yun Zishan — Master and mentor. Yinyin is Yun's only direct disciple and endures her severe but precise combat training; Yun later entrusts her with the Qingxia Sword Art. 9 87 99 123
• Yang Ning — Employer, trusted confidant, and eventual love interest. Yang Ning's cultivation insight helps her form her Golden Core; she later confesses her love and plans a life with him beyond the Sword Sect. 14 125 143 145
• Qiao Bin — Senior disciple brother. He is protective of her due to her standing within the Law Enforcement Hall, while she can influence him into helping Yang Ning. 9 14 16
• Dong Xiaojie — Senior from Jade Maiden Peak who entrusts Yang Ning's protection to Yinyin and formally transfers assassination evidence to her. 49
• Lei Lifeng — Sect Master. He promises to act as matchmaker for Yinyin and Yang Ning upon Yang Ning's return; Yinyin asks him to seek a solution to Yang Ning's lifespan issue. 154
• Shi Xuanfei — A rival for Yang Ning's attention and affiliation. Yinyin recognizes she cannot match Shi's resources or offer to retain him. 62 64

Story Role / Major Arcs

Introduction and Myriad Things Come

Yinyin first visits the Law Enforcement Hall interrogation room with Yun Zishan, where she becomes intrigued by Yang Ning and his unfamiliar technology. She later visits Myriad Things Come, becomes its part-time assistant, and helps persuade Yang Ning to accept the Law Enforcement Hall advisor position. 9 11 12 15 16

Golden Core Breakthrough

After hearing Yang Ning's advice on cultivation and the flow of water, Yinyin regulates her True Qi and forms her Golden Core overnight. The breakthrough establishes her as an exceptional young disciple and unsettles Qiao Bin, who has only recently advanced himself. 14

Protection of Yang Ning

Yinyin repeatedly supports Yang Ning during Law Enforcement Hall investigations, covers for his movements when Yun Zishan suspects him, and personally commits to protecting him. Following an assassination attempt, she takes custody of the poisoned needle and remains responsible for his safety. 20 28 49

Qingxia Sword Art Training

With her Golden Core stabilized, Yun Zishan begins personally teaching Yinyin the Qingxia Sword Art in preparation for the Sect Grand Competition. The training drastically limits her time at Myriad Things Come, but she rapidly learns the art’s fundamentals and demonstrates increasingly creative combat combinations. 87 103 108 121 122

Relationship with Yang Ning

Yinyin’s early fascination with Yang Ning gradually becomes love. She seeks his evaluation after training, trusts his plans to equip her for the Sect Grand Competition, imagines leaving the Sword Sect to build a peaceful life with him, and ultimately confesses her feelings. 125 143 145

Yang Ning's Departure

When Yang Ning leaves for the Hehuan Sect, Yinyin reluctantly sees him off after he promises to return and formally propose. Rather than accept access to elite sword arts as compensation, she asks Lei Lifeng to use any future opportunity to address Yang Ning's limited lifespan, offering all of her future merits in return. 154

Trivia

• Her monthly allowance as Yun Zishan's personal disciple is three times Qiao Bin's. 12
• She likes reading Journey to the West while tending the shop. 15 52
• She negotiated Yang Ning's monthly advisor fee from the Law Enforcement Hall's proposed thirty Spirit Stones to forty-eight Spirit Stones, intending to cover the difference from her own salary if necessary. 16 64
• Despite her cheerful demeanor, she has killed hundreds or thousands of criminals through Law Enforcement Hall training missions. 28