ˋㄉㄢˇㄓㄨㄥㄒㄧㄣchìdǎn‑zhōngxīn

赤胆忠心
  1. 形容極其忠誠忠心」。 為民請命赤膽忠心」、赤膽忠心蒼天可鑒」。

lit. red-bellied devotion (idiom)​; whole-hearted loyalty, to serve sb with body and soul