Cai E (simplified Chinese: 蔡锷; traditional Chinese: 蔡鍔; pinyin: Cài È; Wade–Giles: Ts'ai4 O4; 18 December 1882 – 8 November 1916), also romanised as Tsai Ao, born Cai Genyin (Chinese: 蔡艮寅; pinyin: Cài Gěnyín), courtesy name Songpo (Chinese: 松坡; pinyin: Sōngpō), was a Chinese revolutionary leader and general. He led the National Protection War against Yuan Shikai's attempt to restore the monarchy.
Source: “Cai E”, English Wikipedia (CC BY-SA 4.0), excerpt