Yuan Zhen (Chinese:元稹; pinyin:Yuán Zhěn; Wade–Giles:Yüan Chen) (779 – September 2, 831), courtesy name Weizhi (微之), was a politician of the middle Tang Dynasty, but is more known as an important Chinese writer and poet. In prose literature, Yuan Zhen is particularly known for his work Yingying's Biography (鶯鶯傳), which has often been adapted for other treatments, including operatic and musical ones. In poetry, he is remembered for the inclusion of some of his poems by popular anthologies, his verses on exotic topics (such as the former Liangzhou), and for being part of the group of "New Yuefu" poets, which often used poetry as a form of expression and protest, but one potentially subtle enough to avoid the likely repercussions of more direct criticism. The poetic circle in which Yuan Zhen was involved included Bai Juyi, among others. Politically Yuan Zhen was briefly chancellor, during the reign of Emperor Muzong.