K.O.3an Guo (traditional Chinese: 終極三國; simplified Chinese: 终极三国; pinyin: zhōng jí sān guó) is a Taiwanese drama starring George Hu, Xiu, Kirsten Ren, and three out of four members of Fahrenheit as special guests, who starred in the prequels. The title is pronounced as "K.O.-san-guo". It is the third installment (threequel) of the Zhong Ji (終極) series; preceded by KO One and The X-Family.