Guangyun uses "yi zhao" for pronunciation, and Jiyun uses "yi shao" for pronunciation. The pronunciation is the same as "zhe" (鷕). It refers to ribs. The "Book of Odes (Shijing), Minor Odes, Great Kitchen Not Full Commentary" records: An arrow shot into the left leg bone, piercing through to the right [gu], which is an inferior form of killing. The "Commentary" explains: An arrow shot into the left thigh bone, piercing through to the right flank's [gu]. The "Explication of Pronunciation" states: [gu] refers to the abdominal cavity. This character is not found in general dictionaries. Some versions write it as "". The "Tang History, Treatises on Rites and Music" records: The left leg bone piercing through to the lower [gu] is an inferior shooting method. The "Explanation of Sounds" states: [gu] is the shoulder bone. Additionally, Jiyun also provides the pronunciation "hu liao qie," pronounced xiao (皛). It also provides the pronunciation "zi xiao qie," pronounced jiao. The meaning is the same.