Correct

迅雷不及掩耳

/ xùn léi bù jí yǎn ěr /
Strokes
https://i.cchatty2.com/filters:format(webp)/fit-in/684x0/img/202102/迅雷不及掩耳-Chinese-idioms-Cchatty-5783230f-4471-4581-932c-0293bade7166-1612778277.jpg

Collocation

1
真是迅雷不及掩耳
2
如同迅雷不及掩耳
3
以迅雷不及掩耳之势
4
迅雷不及掩耳的行动/速度

Definition

迅雷不及掩耳

Literally means:

as sudden as lightning

Actually means:

A peal of thunder comes so suddenly that people hardly have time to cover their ears. It figuratively means an action or event turns up suddenly and fiercely, leaving people little time for due preparation.

迅猛的雷声来得很快,人来不及把耳朵捂住。比喻动作或事件突然发生,而且来势凶猛,使人来不及防准备。

Example

Used as object or attributive. (作宾语、定语)
1
Jǐngchá
警察
cǎi
采取
le
突击
xíngdòng
行动
  
,
chēzhàn
车站
jìn
附近
de
xiǎotōu
小偷
wǎngjìn
一网打尽
  
,
zhēnshi
真是
xùnléiyǎněr
迅雷不及掩耳
  

The police carried out a raid to knock out a net of thieves near the station.

2
Hǎixiào
海啸
xùnléiyǎněr
迅雷不及掩耳
de
jīngrén
惊人
速度
袭击
hǎibiān
海边
de
陆地
  
,
huǐhuài
毁坏
le
li
那里
de
fáng
房屋
  

The tsunami hit the land by the sea at an alarming rate that could not be covered by lightning, destroying houses there.

3
jūn
我军
xùnléiyǎněr
迅雷不及掩耳
zhī
shì
  
,
tuì
退
le
jìn
进入
biānjìng
边境
de
rén
敌人
  

Our army defeated the enemy entering the border with lightning speed.