Hai Collection, Upper Volume Radical: Bone (gǔ) Character: bin Kangxi Stroke Count: 24 Page 1451, Entry 14 Pronounced bin (falling tone) Pronounced bin (falling tone) Identical to bin (kneecap removal). Shuowen Jiezi (Explanation of Simple and Compound Characters): The end of the knee. Baihu Tong (Comprehensive Discussions in the White Tiger Hall): Bin refers to the removal of the kneecap. Records of the Grand Historian (Shiji), Biography of Zou Yang: Sima Xi had his kneecaps removed in the State of Song. History of the Former Han (Qian Hanshu), Treatise on Law: The penalty of kneecap removal belongs to the five hundred categories of punishment.