The Swan’s Song: The General Doesn’t Know His Deputy Is a Woman

Male Lead: Lu Jinxiao, the youngest General Who Guards the North in the Great Jing, only nineteen years old. Born into a military family, he has never earned the royal family's trust, despite commanding a powerful frontier army. Wickedly charismatic, proud and spirited, with an unyielding sense of honor and ambitions that reach across the realm, he is decisive and merciless, never forgiving a slight. He treats everyone with cold indifference, except for the brilliant young strategist "Su Yan" in his camp, whom he makes a special exception for and favors above all others. He is fiercely possessive. At first, he sees the female lead as a brother-in-arms and trusted subordinate. Later, after learning the truth, he goes mad pursuing her.

Female Lead: Su Wanli, alias Su Yan. Brilliant in both intellect and emotional insight, she is meticulous, cool-headed and ruthless, never a self-sacrificing saint, and always repays a grudge. She became the disciple of the reclusive master Yunmiao Zhenren as a child. A formidable martial artist and peerless strategist, she disguises herself as a man and infiltrates Lu Jinxiao's camp to uncover the truth behind her family's annihilation and fulfill her master's dying wish. Her brilliant tactics earn her fame in a single battle, and Lu Jinxiao promotes her to be his personal deputy. She keeps her thoughts deeply concealed and maintains a flawless disguise throughout.

Second Male Lead: Gu Qinghe, a refined young gentleman from an aristocratic family and the only son of the Grand Tutor, head of the civil officials. Cultured, elegant, warm and perceptive, he has known the female lead since childhood and is the only person who truly knows her after she leaves the mountain. He protects her quietly. Though he seems frail, he is far more formidable than he appears.

Senior Apprentice Sister: Chu Yan'er, dazzling, outspoken and carefree, with the spirit of a chivalrous heroine. She is a capable martial artist but impulsive, tough-talking yet soft-hearted, and always getting into trouble while championing justice. She and her junior apprentice are natural bickering partners. She provides the comedy and helps drive the main plot.

Junior Apprentice Brother: Shen Zhiyi, stern and meticulous, strict about the sect's rules and rigid in everything he does. A skilled martial artist who excels at medicine and poisons, he follows his senior apprentice sister around, constantly cleaning up her messes. He is fiercely protective of those close to him, and he and his senior apprentice sister are secretly in love with each other.