Si Collection, Upper Volume Radical: Water (shuǐ) Entry: huan Kangxi strokes: 17 Page 652, Entry 43 Pronounced huan (rising tone). Meaning: to wash dirt from clothing. Book of Odes (Shijing): To wash my clothing. Zheng Kangcheng's commentary on the Book of Rites (Liji), specifically the section on domestic affairs: Washing the feet is called huan. Also, colloquial language uses the terms upper huan, middle huan, and lower huan to refer to the first, second, and third ten-day periods of a month. Yang Shen stated: This originally referred to the Tang dynasty official system, where officials were given a break every ten days to bathe, and this usage has been passed down to the present. Sometimes also written in a variant form (huan). Also, pronounced han (falling tone). Same as the character meaning vast or extensive (han). According to the Explaining Graphs and Analyzing Characters (Shuowen Jiezi), it was originally written in a different form.