Xu Collection, Middle Volume Radical: Rain (yǔ) 霣 Kangxi strokes: 18 Page 1377, Entry 17 According to the Tang Rhyme (Tangyun), Rhyme Compilation (Yunhui), and Standard Rhymes (Zhengyun), pronounced yǔn (rising tone). According to the Collected Rhymes (Jiyun), pronounced yǔn (rising tone). The pronunciation is the same as the character for falling or perishing (yǔn). Explanatory Notes (Shuowen Jiezi) defines it as rain. People in the Qi region call thunder yǔn. The character shape is composed of the radical for rain and a phonetic element (yuán). Jade Chapters (Yupian) defines it as the sound of thunder beginning and rain falling. Another definition in Explanatory Notes (Shuowen Jiezi) is cloud vapor rising in a swirling motion. It also means to fall or drop, synonymous with the character for meteorite or falling (yǔn). Commentary of Gongyang (Gongyang Zhuan), 7th Year of Duke Zhuang states: At midnight, stars fell like rain. According to Collected Rhymes (Jiyun), pronounced kūn. People in the Qi region call thunder yǔn. According to Collected Rhymes (Jiyun), pronounced yùn (falling tone). It shares the same meaning.