Yun Xi was the twenty-first son of the Kangxi emperor. He was made a beizi (earl) in the eighth year of the Yongzheng era (1730), and soon became a beile (marquis). When Emperor Qianlong ascended the throne, Yun Xi was made Shen Junwang (the Duke of Shen). Yun Xi was a very able artist, following both the ancient style of Dong Yuan and that of Wen Zhengming. He died in the twenty-third year of the Qianlong era, and the emperor Qianlong's sixth son Yong Rong was appointed as his heir.
For brief biography, see Aixinjueluo Jiazu Quanshu (The Aixinjueluo family), Jilin Renmin Chubanseh, 1996, vol.8., pp.62-62