精忠報國 [－－报国]

Jyutping zing1 zung1 bou3 gwok3
Pinyin jīng zhōng bào guó

Definitions (粵典–words.hk)
  1. 動詞
    竭盡忠​誠報​效國家
    to serve one's country loyally
  2. 參看
    盡忠報國