Si Collection, Middle Volume. Radical: Fire (huǒ). Kangxi stroke count: 14. Page 679, Entry 04. From Tang Rhyme (Tangyun), Collection Rhyme (Jiyun), and Rhyme Compilation (Yunhui), the pronunciation is yun. According to Explaining Graphs and Analyzing Characters (Shuowen Jiezi), it refers to dense smoke. In the History of the Former Han (Qian Hanshu), Biography of Su Wu, it mentions placing a smoldering fire. The commentary by Yan Shigu states that a smoldering fire is one gathered together without flames. According to the Jade Chapters (Yupian), it also means smoldering smoke, air, or warmth. In Ban Gu’s Rhapsody on the Eastern Capital (Dongdu Fu), it refers to the descending smoke and the harmonization of primal energy. According to the New Book (Xinshu), Discourse on the Way, that which is pleasant and calming is called yun. The opposite of yun is zhi (fierce). It is also commonly written as yun (to collect/contain). In the Book of Odes (Shijing), Greater Odes, it appears as yun long chong chong. The Explanation of the Text (Shiwen) notes that yun is pronounced fen (rising tone). The original text is also written as yun, pronounced wen (even tone). According to Collection Rhyme (Jiyun), it is also pronounced wen (even tone). It refers to a small smoldering fire. It is sometimes written as xi (to extinguish). It is also pronounced wen (third tone). It means smoldering heat. It is also pronounced yun (falling tone). It refers to using fire to stretch or prepare things. It is also pronounced wen (falling tone). It describes the appearance of dense smoke. Another definition is the appearance of heat. In the New Book (Xinshu), Discourse on Ritual, it states that the heavens are clear and bright, and the earth is rich and warm.