Si Collection, Upper Volume Radical: Water (shuǐ) Chu Kangxi strokes: 14 Page 641, Entry 24 Pronounced chu. The name of a river, originating from Boji Mountain and flowing into the sea. It is also the name of a prefecture. According to the Comprehensive Records of the World (Guangyu ji), it belonged to Jiujiang Commandery during the Qin Dynasty; in the Eastern Jin Dynasty, it was called Nanqiao; during the Northern Qi Dynasty, it was called Beiqiao; and during the Sui, Tang, and Song dynasties, it was called Chuzhou.