Hai Collection, Upper Volume Radical: Horse (mǎ) Entry: Shan Kangxi stroke count: 20 Page 1443, Entry 21 Correct Character Dictionary (Zhengzitong): Pronounced shan. To remove the sexual organs of a male animal. Essential Scripture of the Emaciated Immortal (Quxian Zhouhou Jing): Castrated horse, castrated ox, castrated sheep, castrated pig, castrated chicken, castrated dog, castrated cat. Also used for grafting trees, known as shan trees. Broad Meaning of the Monthly Ordinances (Yueling Guangyi): Contains methods for shan trees. Also written as a variant form (shan). History of the Five Dynasties (Wudai Shi), Biography of Guo Chongtao: Said to Ji Ji: You should remove all eunuchs; as for castrated horses, they are also not to be ridden.