Yu Si Yan

Biodata

Feature	Details
Name	Yu Si Yan (玉思燕)
Alias(es)	Ice Mountain Beauty; one of the Four Heroines 356 2474
Gender	Female
Affiliation	Qingyang Sect; Mystic Maiden Palace; formerly the Heavenly Evil Sect; associated with the Six Absolutes Divine Sect 7 564 670 1191
Occupation/Role	Daughter of Qingyang Sect Master Yu Qingyang; sword cultivator; disciple of the Mystic Maiden Palace and later the Heavenly Evil Sect 7 670
Status	Alive 2492
First Appearance	Chapter 7

Power Progression

Stage / Realm / Level	Chapter	Notes
Primordial Spirit Realm (at least)	197	Her strength is revealed to be at least at the Primordial Spirit Realm after she effortlessly defeats Golden Core Realm cultivator Xuan Yuan Ling. 197
Peak Primordial Spirit Realm	357	Reveals that she can break through to the Escape Void Realm once she obtains Void Crystal Stones. 357
Peak Escape Void Realm	418	Reveals her cultivation while fighting a Tianyun Sect expert alongside Bi Fan. 418
Divine Sense Realm	564	Returns to the Vast Sky Great World after improving under the guidance of a Heavenly Evil Sect Supreme Elder. 564
Intermediate Divine Sense Realm	578	Breaks through during cultivation in the Ancient Battlefield. 578
Late Divine Sense Realm	610	Advances through focused cultivation alongside Bi Fan's group. 610
Peak Divine Sense Realm	631	Reaches the peak of the realm amid continuous life-and-death battles. 631
Early Split Spirit Realm	649	Her cultivation progresses beyond the Divine Sense Realm. 649
Peak Tribulation Crossing Realm	822	Her rapid advancement makes her valuable to Xie Lingxiao's scheme. 822
Early True Immortal Realm	874	Advances with the core members of Bi Fan's group through their shared cultivation. 874
Early Golden Immortal Realm	1008	Reunites with Bi Fan after breaking through. 1008
Primordial Cultivator Level	1411	Advances with many Six Absolutes Divine Sect powerhouses after prolonged cultivation. 1411
Chaos Divine Venerable Realm	2474	After centuries of cultivation and warfare against the Nine Nether Demons, she and her companions become known as the Four Heroines. 2474

Background

Qingyang Sect and Mystic Maiden Palace

Yu Si Yan is the daughter of Qingyang Sect Master Yu Qingyang and Qingyang Sect's foremost young genius. She was accepted as a disciple by the Mystic Maiden Palace, one of the nine great righteous sects, and spent most of each year cultivating there rather than at Qingyang Mountain. 7

When she encountered the injured medicine boy Bi Fan near Jade Maiden Peak, she judged him trustworthy and permitted him to stay on her restricted mountain to tend the herb garden. She later taught him the introductory Myriad Ancestor Fist and entrusted him with the Qingyang Longevity Art after recognizing his exceptional cultivation speed. 7 8

Yu Si Yan regarded Qingyang Sect's decline as a personal burden. She repeatedly sought talented disciples for the sect, supported Bi Fan against internal pressure, and instructed Yu Xiao Feng to treat him as family so that Qingyang Sect would not lose him. 117 118 199

Rise as a Young Expert

During the Nine Nether Dragon Ranking competition, Yu Si Yan demonstrated overwhelming strength. She defeated Golden Core Realm expert Xuan Yuan Ling without drawing her weapon, then fought Xuan Yuan Pojun for over an hour with Spirit Tools and advanced sword arts before conceding after he used the secret technique Heavenly Demon Transformation. 197 203 204

Her loyalty to Qingyang Sect remained firm even after entering greater sects. When Wuji Sect disciples insulted Qingyang Sect, she used the Mystic Maiden Flying Rainbow Sword to disarm and defeat more than a dozen of them, including several Mortal Transformation Realm cultivators, without seriously injuring them. 141

Heavenly Evil Sect and Break with Xie Lingxiao

As a Heavenly Evil Sect disciple, Yu Si Yan joined Bi Fan in the Ancient Battlefield and fought beside him against hostile cultivators and Blood Sha Yao Beasts. She refused to abandon her Qingyang Sect companions or surrender the Wind Hành Secret Key despite pressure from the Heavenly Evil Sect and Tianyun Sect. 569 582

Her master, Xie Lingxiao, initially shielded her from punishment after the Ancient Battlefield incident. His protection concealed a plan to use her Ice Muscle Jade Bone physique as a cultivation cauldron once she became strong enough. 670 753 822

When Xie Lingxiao revealed his intentions, Bi Fan severely injured him. Yu Si Yan then killed Xie Lingxiao herself, ending their master-disciple relationship and accepting the truth behind his years of manipulation. 822

Family and the Four Heroines

Yu Si Yan gradually accepted Bi Fan's pursuit after he repeatedly protected her and supported Qingyang Sect. They officially became a couple during the Ancient Battlefield campaign. 360 651

She later gave birth to Bi Fan's son, Bi Xuan, whose birth manifested the Great Spiritual Powers of Space Black Hole and Myriad Incarnations. 1835

After Bi Xuan was abducted by Su Qiou Shen, Yu Si Yan searched for him while fighting alongside Dugu Qian, Qing Xuan, and Yun Piaoxue. Over centuries, the four women became Chaos Divine Venerable experts known as the Four Heroines. 2473 2474

Yu Si Yan eventually recognized the Demon Emperor's adopted heir Su Ming as Bi Xuan. Though he rejected her claim and attacked her, she continued trying to reach him and later risked her life to save him during their escape. 2477 2486 2492

Appearance

Yu Si Yan is repeatedly described as a peerless beauty whose presence draws attention wherever she appears. She commonly wears white and is noted for an icy, ethereal bearing that earned her the title Ice Mountain Beauty. 7 118 348

• Often appears in white robes, described as resembling a fairy descended to earth. 118
• Maintains an outwardly cold, unapproachable expression around unfamiliar men. 356 1191
• Her composed beauty contrasts sharply with the visible blushes and jealousy she shows around Bi Fan. 156 361

Personality

Yu Si Yan is calm, proud, and highly self-controlled. Even when facing stronger opponents or hostile crowds, she generally responds with measured confidence rather than panic. 197 582

She is deeply protective of Qingyang Sect and its disciples. Her desire to strengthen the sect drives her recruitment of Bi Fan and Wang Zhong, her concern for Qingyang Sect's reputation, and her refusal to tolerate insults against it. 117 141 199

Although initially devoted almost exclusively to cultivation, she gradually becomes more emotionally open around Bi Fan. Her jealousy toward his attention to other women, grief when he appears to die saving her, and willingness to consider his feelings reveal the depth of her attachment. 156 360 589

Abilities & Skills

Swordsmanship

Yu Si Yan is an elite sword cultivator whose precise control lets her overwhelm multiple opponents while limiting unnecessary harm.

• Mystic Maiden Flying Rainbow Sword Art — Defeated more than a dozen Wuji Sect disciples in a single exchange, disarming them without drawing blood. 141
• Mystic Maiden Pure Yang Sword — Used in her extended Spirit Tool duel with Xuan Yuan Pojun. 203
• Nine Heavens Mystic Maiden Sword Art — Her standard high-level sword art; its use is described as resembling the descent of the Nine Heavens Mystic Maiden. 570
• Evil Cloud Divine Sword — A divine-tier sword art of the Heavenly Evil Sect. Its first form is recorded as Evil Cloud Clear Wind Light and Evil Cloud Gentle Breeze; it can swiftly kill Divine Sense Realm Blood Sha Yao Beasts. 569 570 571
• Divine Hành Step — Uses this movement technique in combat to complement her swordplay and disrupt opponents' rhythm. 1192

Ice Muscle Divine Bone Body Refining Art

A women-only body-refining art cultivated by Yu Si Yan.

• Strengthens her physique to a level Bi Fan judges no weaker than his own after she receives Void Divine Crystals. 570
• Reaching its sixth level requires her to attain the Tribulation Crossing Realm and reshape her body. 651
• Her Ice Muscle Jade Bone physique is the reason Xie Lingxiao intended to exploit her as a cultivation cauldron. 753 822

Cultivation Insight

Yu Si Yan received guidance from a Virtual Immortal Realm expert, giving her martial-arts comprehension beyond many cultivators at her level. 570

• At the Divine Sense Realm, she could defeat peak Split Spirit Realm opponents and contend with early Divine Spirit Realm experts. 571
• She provides Bi Fan with tactical advice, identifies his hidden potential, and helps him assess the value and classification of martial skills. 117 569 570

Equipment / Weapons / Items

• Zi Wei Soft Sword — A Spirit Tool powerful enough to rapidly eliminate Primordial Spirit Realm Yao Beasts. 357
• Ice Snow Cold Sword — Complete Mid-grade Spirit Tool used alongside the Evil Cloud Divine Sword. 569
• Daybreak Divine Sword — Top-grade Spirit Tool awarded to Yu Si Yan after Bi Fan distributes the group's spoils. 629
• Wind Hành Secret Key — Entrusted to her by Xiaoyao Kuang during a confrontation with multiple factions. 582
• Low-grade Immortal Tool — Given to her by Bi Fan before her return to the Heavenly Evil Sect. 822
• Light-Dark Annihilation Thunder Beads — Receives three as life-saving treasures from Bi Fan. 1561

Relationships

• Bi Fan — Her former ward and student, later lover and husband. Yu Si Yan initially rejects his confession to focus on cultivation, but eventually accepts him as her boyfriend and gives birth to Bi Xuan. 8 356 651 1835
• Yu Qingyang — Her father and the Sect Master of Qingyang Sect. She works to protect his sect and persuade him to invest in Bi Fan. 7 118
• Yu Xiao Feng — Her loyal maid and close attendant, tasked with investigating Bi Fan and helping integrate him into life on Jade Maiden Peak. 7 117
• Xie Lingxiao — Her former Heavenly Evil Sect master. He protected her to exploit her physique, prompting Yu Si Yan to kill him after his betrayal is exposed. 670 822
• Xuan Yuan Pojun — A major rival whose secret technique defeated her in the Nine Nether Dragon Ranking final. 202 204
• Bi Xuan / Su Ming — Her son with Bi Fan, abducted at birth and raised by Su Qiou Shen. Yu Si Yan continues to seek him despite his rejection of her. 1835 2477 2492
• Dugu Qian, Qing Xuan, and Yun Piaoxue — Her companions in the Four Heroines; they cultivate and fight beside her during the war against the Nine Nether Demons. 2474