Hai Collection, Upper Volume Radical: Horse (mǎ) Entry: Sa Kangxi stroke count: 14 Page 1434, Entry 24 Pronounced sa. According to the Explaining and Analyzing Characters (Shuowen Jiezi), it refers to horses running in succession. According to the Jade Chapters (Yupian), it describes the appearance of a horse running. In the Rhapsody on the Sweet Springs Palace (Ganquan Fu) by Yang Xiong, it is written: Running swifter than a clap of thunder, passing the wind (sa). The commentary notes this refers to the speed of the horse and carriage. It also refers to Sa-Suo, the name of a Han dynasty palace. In the Rhapsody on the Western Capital (Xidu Fu) by Ban Gu, it is written: Passing through the Daidang gate and exiting the Sa-Suo palace. It also refers to the appearance of being uneven, winding, and slow.