Li Duan, bearing the courtesy name Zhengyi, originated from the Zhaojun commandery. Demonstrating early academic promise, he achieved the prestigious Advanced Scholar (Jinshi) degree in the fifth year of the Dali era during the reign of Emperor Daizong of Tang. Throughout his literary career, he maintained vibrant artistic ties with prominent contemporaries such as Lu Lun, Ji Zhongfu, Han Hong, Qian Qi, Sikong Shu, Miao Fa, Cui Tong, Geng Wei, and Xiahoushen, a collective renowned in imperial literary history as the Ten Talents of the Dali Period. Li Duan once resided as a guest at the estate of imperial son-in-law Guo Ai, where his exquisite verse distinguished him above all other gathered guests. His official career began with an appointment as a Proofreader in the Imperial Library. Later, following a period of illness, he relocated to the Jiangnan region, ultimately serving as Assistant Administrator of Hangzhou, where he passed away. His literary output was preserved in a collected edition, with three volumes of his poetry surviving into modern anthologies.
As a core representative of the Dali poetry movement, Li Duan navigated the transitional literary landscape following the An Lushan Rebellion. His poetic style eschewed the grandiose expansiveness of High Tang frontier verse in favor of meticulous craftsmanship, melancholic undertones, and acute sensitivity to scenic desolation and personal parting. Writing primarily within the regulated pentasyllabic and heptasyllabic verse forms, he excelled at capturing quiet moments of reclusion, twilight landscapes, and scholarly gatherings. His extant masterpieces reflect a refined tonal balance and a deep engagement with the classical heritage, establishing him as a master of concise lyrical atmosphere.
The existential and aesthetic core of Li Duan's poetry is shaped by the traditional synthesis of Confucian official duty and Daoist-inspired reclusion. While his entry into the civil service and his association with elite imperial households reflected standard literati ambitions, his frequent retreats to the scenic landscapes of the south and his ultimate retirement to Hangzhou reveal an underlying yearning for spiritual transcendence and detachment from court factionalism. His verses frequently negotiate the tension between public sorrow over an empire recovering from civil trauma and the private solace found in wine, nature, and scholarly companionship.
Li Duan's inclusion in the authoritative Complete Tang Poems (Quan Tangshi) secures his enduring place in the imperial literary canon. Traditional critics across subsequent dynasties, from late Tang commentators to Qing dynasty anthologists, praised the Ten Talents for preserving the refined mechanics of regulated verse during a politically fractured era. In modern international Sinology, Li Duan and his contemporaries are studied as crucial figures who bridged the transition from the golden age of Tang poetry to the more introspective, socially conscious aesthetics of the mid-to-late Tang dynasty.