Dugu Yan

Biodata

Feature	Details
Name	Dugu Yan (雁子)
Alias(es)	Yanzi; Yan Yan
Species/Race	Human; later begins transformation toward a toxin-based lifeform
Gender	Female
Affiliation	Heaven Dou Royal Academy
Occupation/Role	Soul Master; wielder of the Jade Phosphorous Serpent Martial Soul
Status	Alive; cultivating the Myriad Poisons Codex
First Appearance	Chapter 11

Background / History

Dugu Yan is Dugu Bo's only granddaughter. Her parents died when she was young, while her grandfather withheld the cause of their deaths from her. Qin Moyu later identifies the Dugu family's condition as a hereditary toxin accumulating within the meridians and gradually eroding the body—an inherited defect connected to the Jade Phosphorous Serpent Martial Soul 99.

Before meeting Qin Moyu, Dugu Yan repeatedly tried to persuade Dugu Bo not to trust Tang San. She was frustrated when her grandfather befriended Tang San, accepted his hidden weapons, and became an honorary adviser to Shrek Academy despite her warnings 48. Her distrust deepened after Tang San stripped the Icefire Yin Yang Well of its Immortal Herbs without considering the Dugu family’s needs 54 55.

With Xue Ke's help, Dugu Yan approached Qin Moyu and offered to recommend him to Heaven Dou Royal Academy. She valued both his willingness to address her martial soul defect and his opposition to Tang San 54 55. After Qin Moyu recognized the severity of her condition, she directly asked him for treatment, willing to pay any price for a cure 99.

Dugu Yan later confessed her love to Qin Moyu and became his girlfriend. She formally introduced him to Dugu Bo as the boyfriend she had chosen, earning her grandfather's immediate approval 100 105.

Appearance

Dugu Yan is a beautiful, slender young woman with dark- or forest-green eyes. She is associated with light-green coloration and often visibly blushes when flustered around Qin Moyu 48 99 105.

• Dark-green / forest-green eyes 99 105
• Light-green figure and jade-green aesthetic associated with her serpent Martial Soul 48
• Described by Qin Moyu as especially spirited and beautiful as a child 94
• Frequently acts openly affectionate after entering a relationship with Qin Moyu 102 105

Personality

Dugu Yan is perceptive, emotionally direct, and fiercely loyal to the people she considers family. Unlike Dugu Bo, she does not accept Tang San’s professed goodwill at face value; Tang San’s treatment of the Icefire Yin Yang Well convinces her that he is unworthy of trust 54 55.

Her illness leaves her vulnerable and desperate for a solution, yet she is not passive. She takes the initiative to recruit Qin Moyu, confronts Yu Tianheng when he interferes with her choices, and boldly confesses to Qin Moyu despite knowing he already has a girlfriend 54 95 100.

Dugu Yan is deeply protective of Dugu Bo. When he offers to abandon his own treatment for her sake, she tearfully refuses and insists that they must both survive 106. She also understands Qin Moyu’s mischievous side quickly and chooses to support him even when he deliberately pushes Dugu Bo to confront his regret over Tang San 106.

Abilities & Skills

Jade Phosphorous Serpent Martial Soul

Dugu Yan possesses the rare beast-type Jade Phosphorous Serpent Martial Soul, which continuously produces Jade Phosphorous Serpent Poison 86.

• Produces potent poison naturally and without end 86
• Suffers from a hereditary martial soul defect: toxins accumulate in her meridians during Soul Power circulation 99
• Her condition causes recurring bodily pain and threatens to worsen over time 99
• The human body cannot indefinitely withstand the poison produced by the Martial Soul 86

Myriad Poisons Codex

Qin Moyu gives Dugu Yan the Myriad Poisons Codex and personally guides her initial cultivation using the Herrscher of Reason Divine Core. She begins transforming from an ordinary carbon-based lifeform into a toxin-based lifeform able to absorb poisons for growth 110.

• First stage: Grants immunity to all organic toxins in the three-dimensional world and initiates her transformation into a toxin-based lifeform 110
• Second stage: Grants immunity to mental viruses and related cognitive contamination 110
• Third stage: Grants immunity to toxins across the entire timeline, described as absolute poison invulnerability 110
• Requires the assistance of a complete Herrscher of Reason Divine Core to begin cultivation safely 86 110
• Has not been shown completing the first stage; she enters meditation after Qin Moyu starts the process 110

Relationships

• Dugu Bo — Her grandfather and only remaining family. Dugu Yan consistently defends him, distrusts those who exploit him, and refuses to let him sacrifice his life for her treatment 48 105 106.
• Qin Moyu — Her boyfriend and the person she trusts to cure her martial soul defect. She recruits him to Heaven Dou Royal Academy, confesses to him directly, and begins cultivating the Myriad Poisons Codex under his guidance 54 100 105 110.
• Xue Ke — A sworn sister and close friend. Xue Ke helps Dugu Yan connect with Qin Moyu and prioritizes her treatment despite her own feelings for him 54 99 102.
• Ye Lingling — Her best friend. Ye Lingling notices Dugu Yan’s feelings for Qin Moyu, helps create opportunities for them to speak privately, and assists with practical matters during Yan’s treatment 85 99 102.
• Tang San — An object of distrust and resentment. Dugu Yan believes he deceived and exploited Dugu Bo, took the family’s Immortal Herbs, and failed to sincerely address the Dugu family’s poison problem 54 55 105.
• Yu Tianheng — An unwanted pursuer. Dugu Yan rejects his attempts to interfere in her relationship with Qin Moyu and views his future abandonment of the Dugu family as proof of his unreliability 95.

Story Role / Major Arcs

Opposition to Tang San

Dugu Yan initially watches Dugu Bo grow close to Tang San with alarm. Though unable to change her grandfather’s mind at first, she remains one of the few people around him to consistently question Tang San’s motives 48 54.

Recruitment of Qin Moyu

After learning that Qin Moyu intends to help resolve her martial soul defect, Dugu Yan offers him access to Heaven Dou Royal Academy. Alongside Xue Ke, she successfully helps him enroll, giving her direct contact with the person she sees as her best chance for both personal growth and revenge against Tang San 54 55.

Conflict with Yu Tianheng

Yu Tianheng confronts Qin Moyu after seeing Dugu Yan acting closely with him. Dugu Yan openly rebukes Yu Tianheng, makes clear that her life is none of his business, and refuses to tolerate his insults toward Qin Moyu 95.

Confession and Family Introduction

After revealing her illness to Qin Moyu, Dugu Yan becomes increasingly attached to him. She confesses directly, accepts a relationship with him, and soon brings him to the Dugu residence to introduce him as her chosen boyfriend 99 100 105.

Cure and Dimensional Transformation

At the Icefire Yin Yang Well, Qin Moyu prepares separate solutions for Dugu Bo and Dugu Yan. While Dugu Bo receives the Jade Phosphorous Poison Scripture, Dugu Yan is entrusted with the far more powerful Myriad Poisons Codex, beginning a path intended to eliminate her inherited poison defect entirely 109 110.

Notable Quotes

“Ever since the first time I saw you, I've liked you deeply.” 100

“We have to live well together. You are not allowed to say such nonsense again!” 106

Trivia

• Dugu Yan possesses a Diary Copy and reacts to Qin Moyu’s diary entries alongside other readers 11 54.
• She considers Qin Moyu’s interest in opposing Tang San a point of compatibility between them 55.
• Her affection for Qin Moyu is partly attributed to the high-dimensional genetic attraction of the Herrscher of Reason Divine Core 102.