雷打不动 léi dǎ bù dòng

DEFINITIONS

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

CHARACTERS

雷 léi
HSK 5
thunder
打 dǎ
HSK 1
strike, hit, beat; fight; attack
不 bù
HSK 1
no, not; un-; negative prefix
动 dòng
HSK 2
move, happen; movement, action