Hai Collection, Upper Volume Radical: Horse (mǎ) Fei Kangxi stroke count: 19 Page 1441, Entry 27 Pronounced fei. Fei-tu refers to a legendary swift horse of ancient times. According to the Shuowen Jiezi, it describes a horse that runs rapidly. The Sima Law (Sima Fa) states: Fei wei si yu. It is also written interchangeably with the character for fly (fei). Xu states that the reference in the Records of the Grand Historian (Shiji) to racing six fei refers to a team of six horses.