Xu Collection, Middle Volume. Radical: Rain (yǔ). Entry: Yin. Kangxi strokes: 17. Page 1376, Entry 34. According to the Extensive Rhymes (Guangyun), pronounced yin. Clouds covering the sun. In the Three Tombs of Antiquity (Gu Sanfen), clouds and the sun being obscured is called yin. In Song Yu's Nine Arguments (Jiubian), the sky is dark and gloomy, and the light cannot shine through. Also used as a surname. According to the Extensive Rhymes (Guangyun), it originates from the Compiled Texts (Zuanwen). In the Urgent Message (Jijiupian): Washing in the cold yin, participating in the labor. Note: This character is an erroneous form of the character for clear.