Hai Collection, Upper Volume Radical: Bone (gǔ) Entry: Bo Kangxi strokes: 20 Page 1450, Entry 19 Pronounced bo. According to the Explaining Graphs and Analyzing Characters (Shuowen Jiezi), it refers to the scapula. In the History of the Former Han Dynasty (Qian Han Shu), Emperor Wu's Annals, the Emperor's son Bo was made the King of Changyi. The commentary by Jin Zhuo states that Bo is the character that Xu Shen identified as the scapula. In the Collected Rhymes (Jiyun), it is sometimes written in a variant form. Also, in the Collected Rhymes (Jiyun), it is pronounced po, with the same meaning. This character was originally written as a variant.