Wu Collection, Middle Volume Radical: Sickness (bìng) Gu; Kangxi strokes: 13; Page 775, Entry 28 Collection of Rhymes (Jiyun), Rhyme Compilation (Yunhui), and Orthodox Rhymes (Zhengyun): Pronounced gu. Explanatory Dictionary of Characters (Shuowen): Originally written as the variant form. It refers to a long-term illness. Orthodox Rhymes (Zhengyun): A sickness that has been long-standing and fixed. Annals of the Later Han (Hou Hanshu), Biography of Emperor Guangwu: In the capital, a sweet spring emerged; those who drank from it had their chronic illnesses all cured. Master Who Embraces Simplicity (Baopuzi), Micro-intentions Volume: To harbor a chronic illness while discussing the essence and the skill of Bian Que and Cang Gong. Also, Rhyme Compilation (Yunhui): Used interchangeably with the character meaning firm or solid (gu). Book of Rites (Liji), Monthly Ordinances (Yueling): The state suffers from many chronic illnesses. Also used interchangeably with the character meaning to block or seal (gu). History of the Former Han (Qian Hanshu), Biography of Jia Yi: It must become a chronic illness.