雷打不动
Mandarin
| simpl. | 雷打不动 | |
|---|---|---|
| trad. | 雷打不動 | |
Etymology
Literally: even if lightening were to strike it, it will not move
Idiom
雷打不动 (simplified, Pinyin léi dǎ bù dòng, traditional 雷打不動)
- one's mind is made up, and cannot be changed
- to rigidly adhere to an established arrangement, without any changes