Correct

来龙去脉

/ lái lóng qù mài /
Strokes
https://i.cchatty2.com/filters:format(webp)/fit-in/684x0/img/202102/来龙去脉-Chinese-idioms-Cchatty-4ff7bf0c-96f1-4b98-b48c-ae96aa37de5c-1612777514.jpg

Collocation

1
……的来龙去脉还不清楚/还不知道
2
知道……的来龙去脉
3
搞清/查明/了解来龙去脉

Definition

来龙去脉

Literally means:

the coming dragon and disappearing mountain ridge

Actually means:

origin and development; cause and effect

It originally refers to the directions to which mountain ridges extend. It figuratively means the origin and development, or cause and effect of an event.

原指山脉的走势,后比喻事情的经过或前因后果。

Example

Used as subject or object. (作主语、宾语)
1
Zhè
shì
事故
de
láilóngmài
来龙去脉
dìng
一定
yào
nòng
qīngchǔ
清楚
  
,
biàn
以便
cóngzhōng
从中
吸取
jiàoxun
教训
  
,
fángzhǐ
防止
lèi
类似
shìjiàn
事件
zài
再次
shēng
发生
  

The history of this accident must be clarified in order to learn from it and prevent similar incidents from happening again.

2
liǎng
jiā
jiūfēn
纠纷
de
láilóngmài
来龙去脉
gào
告诉
le
shī
律师
  
,
bìng
wèn
shìfǒu
是否
可以
chū
提出
sòng
诉讼
  

She told her lawyer about the two disputes and asked if he could file a lawsuit.

3
Zhège
这个
shù
艺术
liúpài
流派
de
láilóngmài
来龙去脉
shì
zěnyàng
怎样
de
  
,
néng
gěi
men
我们
jiā
大家
jiǎng
jiǎng
ma
  
?

What's the history of this art genre, can you tell us all?

Related

来龙去脉