|Created by||Jin Yong|
|Affiliation||Ancient Tomb Sect|
|Children||Yellow Dress Maiden|
|Skills and abilities|
|Qinggong||Ancient Tomb Sect qinggong|
|Unarmed combat skills|
|Armed combat skills|
|Literal meaning||Little Dragon Maiden|
Xiaolongnü is the fictional female protagonist of the wuxia novel The Return of the Condor Heroes by Jin Yong. In the novel, her physical appearances is described as follows: "skin as white as snow, beautiful and elegant beyond convention and cannot be underestimated, but appears cold and indifferent". She trains the protagonist Yang Guo in martial arts, and they eventually fall in love.
In the novel, the guardians of Xiaolongnü (literally "Little Dragon Maiden") name her after the Chinese zodiac year in which she was born, the Year of the Dragon. Yang Guo, Granny Sun, and her martial arts master call her "Long'er", but otherwise, the novel gives her no other name.
An unknown figure abandons an infant Xiaolongnü outside Chongyang Palace (the Quanzhen Sect's headquarters). Her cries pierce the silence of the night and draw the attention of the Quanzhen priests. Before they decide what to do with the baby girl because the sect does not accept female members, a middle-aged woman called Granny Sun appears and takes Xiaolongnü away to the nearby Ancient Tomb.
An unnamed apprentice of Lin Chaoying, the founder of the Ancient Tomb Sect, raises Xiaolongnü. As a child, she learns all the sect's martial arts and masters all of them after many years. She starts learning the sect's highest order skill from the Jade Maiden Heart Sutra, but since her master's understanding of the skill is incomplete, her own understanding is even more limited.
The sect expels Xiaolongnü's senior, Li Mochou, for poor conduct. Xiaolongnü inherits the sect's leadership position at age 14 after her master dies. Only Granny Sun accompanies her. Meanwhile, Li Mochou spreads rumours in the jianghu that when Xiaolongnü turns 16, she will offer her hand in marriage to any man who can defeat her. The lucky man will also claim possession of the tomb, which is said to house great treasures and martial arts manuals. The Mongol prince Huodu believes the tale and travels to the Ancient Tomb, hoping to meet Xiaolongnü. He brings his henchmen with him, and they raid Chongyang Palace along the way. Coincidentally, Guo Jing arrives at Chongyang Palace with Yang Guo and drives away Huodu and his men.
Xiaolongnü meets Yang Guo for the first time when he ventures into the Ancient Tomb while escaping from the bullies at Quanzhen Sect. She asks Granny Sun to send him back to Quanzhen and tell the priests not to mistreat him anymore. However, the Quanzhen priests insult Yang when they see him return. The furious Granny Sun fights them, but Hao Datong mortally wounds her. Xiaolongnü appears at the critical moment, defeats Hao Datong and saves Yang Guo. Before her death, Granny Sun makes Xiaolongnü promise to take care of Yang Guo. She wants both of them, orphans, to have each other as companions after her death. The Quanzhen priests oblige and allow Yang Guo to leave with Xiaolongnü.
Xiaolongnü accepts Yang Guo as her apprentice, and they live together in the Ancient Tomb for several years. During these years, Xiaolongnü imparts most of her martial arts and skills to Yang Guo. Yang Guo does not like to address her as "Master" (Sifu) and prefers to call her "Aunt" () instead. They fall in love, but the prevailing norms of the wulin (martial artists' community) makes their romance taboo, equivalent to incest. They encounter several tribulations after leaving the tomb and numerous tests of their love. Although they eventually marry in Chongyang Palace, they again separate, this time for sixteen years, until their reunion at the end of the novel.
Yang Kang and Mu Nianci's family tree