Kuo Kuo-chi has been active in politics since shortly after Taiwan returned from Japanese to Chinese rule, and was one of the "Five Tiger Generals" of the early years of the Taiwan Provincial Assembly. His quick reactions and hard-hitting style earned him the epithet "Cannon Kuo" in political circles and the media.
自光復初期便在政壇上活躍的郭國基，是早年省議會「五虎將」之一，由於他問政慓悍，而被當時政界及新聞界稱為「郭大砲」。