Chou Collection, Middle Volume Radical: Earth (tǔ) 壅 Kangxi stroke count: 16 Page 240, Entry 18 Guangyun, Jiyun, Yunhui, Zhengyun: Pronounced yong (falling tone). To block or obstruct. Records of the Grand Historian (Shiji), Annals of Qin: The Yellow River burst its banks and could not be blocked again. One theory suggests it refers to adding soil to cover or build up earth, a dialect usage from regions south of the Yangtze River. Generally, piling soil to cover the roots of plants and watering them is called yong. Also the name of a grass. The Euryale ferox plant is also called ji yong, see Materia Medica (Bencao). Also pronounced yong (level tone). Interchanged with yong. In the Rites of Zhou (Zhouli), the official known as the yong shi and in the Book of Han (Hanshu), Treatise on Rivers and Canals (Gouxi Zhi), the term is written as yong. Also, Jiyun, Yunhui: Pronounced yong (rising tone); Zhengyun: Pronounced yong (rising tone). The meaning is the same.