Wu Collection, Upper Volume Radical: Jade (yù) Bing Kangxi stroke count: 9 Page 728, Entry 07 Collected Rimes (Jiyun): Pronounced bian (falling tone). Refers to a jade ornament used to decorate a leather ceremonial cap. Zuo Tradition (Zuozhuan), 28th Year of Duke Xi: Zi Yu made for himself a leather cap decorated with beautiful jade and jade tassels. Explanation of Text (Shiwen): For the word cap, some versions are written as bing. Pronounced bian (falling tone). Categorized Lexicon (Leipian): Some versions also write it as a variant form. Textual Research: Zuo Tradition (Zuozhuan), 28th Year of Duke Xi, states: The Viscount of Chu made for himself a fine jade cap and jade tassels. Note: The original text writes Viscount of Chu Yu, but the character for Chu may be omitted while the character for jade cannot. I have corrected Chu Viscount to read Zi Yu.