Correct

知底细

/ zhī dǐ xì /
Strokes
https://i.cchatty2.com/filters:format(webp)/fit-in/684x0/img/202102/知底细-Chinese-idioms-Cchatty-2bfcd4cd-a61e-4afb-bd02-cf62682f307c-1612777853.jpg

Collocation

1
知(道)……的底细
2
不知底细
3
互相知底细
4
不知底细的人
5
知底细的人

Definition

知底细:

Literally means:

know the inside story; be in the know

Actually means:

底细, the inside story.

This phrase means under standing the inside story or secret of somebody or something.

底细,内部的真实情况。

知底细,了解某人或某事的不对外公开的情况。

Example

Used as attributi utive or predicate. It can have other words in between and can be used in inverted order. (作定语、谓语,中间可以插入其他词语,可倒装使用)
1
ge
那个
diàochá
调查
méiyǒu
没有
jìnzhǎn
进展
  
,
zhè
shì
yīnwèi
因为
zhī
底细
de
rén
yǒu
顾虑
gǎn
shuō
  

The investigation didn't progress because people with knowledge of the details had concerns.

2
ge
那个
rén
de
底细
shuí
zhīdào
知道
  
,
suǒ
所以
cái
shòu
le
de
piàn
  

The man's bottom knew no one, so he was deceived.

3
Zhīyǒu
只有
zhīdào
知道
zhè
jiàn
shì
de
底细
  
,
zhǐnéng
只能
wèn
le
  

Only she knows the details of the matter, you can only ask her.