Si Collection, Upper Volume Radical: Water (shuǐ) Kangxi Strokes: 13 Page 638, Entry 09 Pronounced tuan. The name of a river. Also used interchangeably with nuan. In the Rites of Zhou (Zhouli), in the commentary on Nuanzhuo, Zheng Kangcheng states: Nuan, in ancient script is written as tuan. This is a regional dialect from the Jing and Mian river regions. The commentary notes: This is the dialect of the people of Yuzhou.