Correct
雷打不动
/ léi dá bù dòng /
Strokes
Definition
not shaken by thunder (idiom); the arrangements are unalterable/to adhere rigidly to regulations/will go ahead whatever happens (of an arrangement or plan)
Example
Definition
not to be shaken by thunder―not to be altered under any circumstances; unshakable; unyielding
1
Tā
他
měitiān
每天
jiānchí
坚持
chénliàn
晨练
,
léidábùdòng
雷打不动
。
His doing exercises in the morning has never stopped for a single day.