Si Collection, Upper Volume Radical: Water (shuǐ) Entry: Sui Kangxi Strokes: 17 Page 654, Entry 05 Pronounced sui (falling tone). A small trench or ditch between fields. Originally written as sui. Book of Rites of Zhou (Zhouli): Between the plots of land are ditches, and above the ditches are paths. In the Compilation of Rhymes (Jiyun), it is sometimes written in a variant form.