The mandarin duck knife is a character story in the martial arts novel "Eight Dragons" written by Mr. Jin Yong. The following are the main characters, gangs, and martial arts in the novel: Character: 1 Duan Zhengchun: The father of Emperor Duan Yu of Dali was fond of women and had the power of the inner attendants in the palace of Dali. 2. Xuzhu: Wuyazi's disciple was born in Shaolin Temple. He was open-minded and strong in martial arts. He eventually became the emperor of Dali. 3. Murong Fu: The revisionist was once Duan Zhengchun's subordinate, but later became Duan Zhengchun's enemy. [4. Azhu: Duan Zhengchun's lover, one of the chamberlains in Dali's Imperial Palace.] 5 Duan Yu: Xuzhu's disciple, the only son of Emperor Duan Zhengchun of Dali Kingdom. He is gentle, kind, and strong in martial arts. [6. Zhong Ling: Duan Zhengchun's lover, one of the chamberlains in the Dali Kingdom's Imperial Palace.] 7. Wang Yuyan: Murong Fu's lover is smart and skilled in martial arts, and she eventually got together with Duan Yu. 8. Qiao Feng: The legendary figure in Jianghu, the leader of the Beggar's Sect, is highly skilled in martial arts and has a strong sense of justice. He and Duan Yu have the story of the Duan family's two eagles. Prince Duan: Duan Zhengchun's younger brother is also the Emperor of Dali. He likes to collect rare and strange beasts and has a force under him. 10 Murong Family: The revivalist family has two protagonists, Murong Fu and Murong Yan. Their family is good at martial arts and is good at all kinds of martial arts. Guild: 1. The power of the imperial palace of Dali: One of the main powers under Duan Zheng Chun was in charge of the intelligence, army, and wealth of Dali. [Beggar's Sect: One of the most famous sects in China's martial arts world. It is known for its "Dog Beating Stick Technique" and is one of the main opponents of Qiao Feng and the others.] Martial arts: [1. Duan's Twin Eagles: Duan Zhengchun's unique martial art allows him to control rare beasts at will and turn them into his own weapons.] 2. Murong Family's Martial Arts: Murong Fu and Murong Yan's family are good at various martial arts, including Murong Fu's Shifting Stars and Murong Yan's Murong Martial Arts.