Shen Collection, Lower Volume Radical: Clothing (yī) Character: Chan Kangxi Strokes: 18 Page 1124, Entry 31 Tang Rhymes (Tangyun), Collected Rhymes (Jiyun), and Rhyme Compendium (Yunhui) define it as pronounced dan. According to the Explaining Graphs and Analyzing Characters (Shuowen), it refers to a garment that is not lined. In the Book of Rites (Liji), Jade Pattern (Yuzao) section, it says: A single-layered garment serves as the base. The commentary explains: It consists of an outer garment without a lining. In the Dialects (Fangyan) by Yang Xiong, it is stated that a sweaty under-jacket is sometimes referred to as a single-layered jacket. In the History of the Former Han Dynasty (Qianhan Shu), Biography of Jiang Chong: Initially, when Chong was summoned to the Quantai Palace, he wore a single-layered robe of fine gauze. The commentary by Yan Shigu notes: The construction of a single-layered robe is similar to the inner garment worn under the formal court dress today. The Collected Rhymes (Jiyun) records it as written in the form of dan.