45°10′40.3″N 104°33′14.7″E / 45.177861°N 104.554083°E The Inscription on the Ceremonial Mounding of Mount Yanran (Chinese: 封燕然山銘; pinyin: Fēng Yānránshān Míng) is an inscription composed by the historian Ban Gu of the Eastern Han dynasty and carved by the general Dou Xian on a cliff in the Yanran Mountains (modern Delgerkhangai Mountains) in 89 AD, to commemorate Dou's victory against the nomadic Xiongnu Empire. The text is in the 5th-century official history Book of Later Han, and the inscription was rediscovered by researchers in the Baruun Ilgen hills located south of Inil/Inel (modern Delgerkhangai) mountain, which is in the Gobi desert of Dundgovi Province, central Mongolia.[1][2]