Chou Collection, Upper Volume Radical: Enclosure (wéi) Kangxi Strokes: 10 Page 219, Entry 01 Pronounced yu (rising tone). A term for a prison. Shuowen: To guard. Book of Rites (Liji), Monthly Ordinances: To inspect prisons. Commentary: The word yu signifies to restrain. It is used to prevent criminals from entering or leaving the detention cell. Records for Beginning Students (Chuxueji): The word ling signifies to govern. The word yu signifies to defend. This refers to the management and containment of prisoners. Another interpretation: ling signifies to command, and yu signifies to awaken, allowing the criminal to enter and repent. Zuo Tradition (Zuozhuan), Fourth Year of Duke Xuan: Imprisoned Bo Ying at Liaoyang and executed him. Also identical to the character yu (a horse stable). Shuowen: The term lingyu is also written as lingyu (variant form), a place used for detaining criminals. Book of Documents (Shujing), Tribute of Yu: West of Mount Qi, there is the Vermilion Stable (Zhu Yu). History of the Former Han (Qian Hanshu), Treatise on Geography: Written as Vermilion Prison (Zhu Yu). Also, from the Biography of Dongfang Shuo: The prison is empty.