Tang Rhymes (Tangyun), pronounced yi (falling tone). Collected Rhymes (Jiyun), pronounced yi (falling tone), pronounced yi. Explained in Discussing Writing and Explaining Characters (Shuowen Jiezi) as a farming implement. Defined in Jade Chapters (Yupian) as a large tripod cauldron. Sometimes also written in a variant form (yi) in Collected Rhymes (Jiyun).