ㄌㄟˊㄉㄚˇㄅㄨˊㄉㄨㄥˋléidǎ‑búdòng

雷打不动
léidǎ‑bùdòngㄌㄟˊ ㄉㄚˇ ㄅㄨˋ ㄉㄨㄥˋ
  1. 即使雷擊不移比喻堅決堅定毫不動搖 堅決完成任務雷打不動」、規定雷打不動無條件執行」。

not shaken by thunder (idiom)​; the arrangements are unalterable, to adhere rigidly to regulations, will go ahead whatever happens (of an arrangement or plan)​