Chou Collection, Upper Volume Radical: Mouth (kǒu) Character: Yin Kangxi stroke count: 18 Page 212, Entry 43 Ancient text records: Pronounced yin. Explanations from the Origin of Chinese Characters (Shuowen Jiezi): The sound of speech. Jade Chapters (Yupian) explanation: Stupid or foolish. Classic of History (Shangshu), Canon of Yao: The father is stubborn and the mother is foolish. Zuo Tradition (Zuozhuan), 24th Year of Duke Xi: To speak words that lack loyalty and sincerity is called yin. Book of Han (Qian Hanshu), Biography of the Prince of Changyi: Written as a variant form. Also used as a personal name. Discourses of the States (Guoyu), Jin Discourses: Summoned Grand Historian Yin to perform divination. Note: Grand Historian Yin was the grand historian of the State of Guo. Also, according to the Collected Rhymes (Jiyun), pronounced yan. The sound of speech. Textual verification: Discourses of the States (Guoyu), Jin Discourses: Summoned Grand Historian Yin to divine. Based on the original text, the character zhi has been added following the character for divine.