Correct

铁面无私

/ tiě miàn wú sī /
Strokes
https://i.cchatty2.com/filters:format(webp)/fit-in/684x0/img/202102/铁面无私-Chinese-idioms-Cchatty-7cdf8712-9771-4a2c-a39a-6b8b3e2518a0-1612778341.jpg

Collocation

1
铁面无私的官员
2
做人做事必须铁面无私
3
办案铁面无私

Definition

铁面无私

Literally means:

impartial and incorruptible

Actually means:

It describes someone who is relentless in his singleness of purpose in the execution of his duties according to law or regulations, not to spare anyone's sensibilities or to be moved by personal appeals.

Never will he submit to the powerful and influential people. He is always trying to be just and fair. Commendatory

形容严格依照法律或规章制度办事或处理案件,不讲私情,不顾情面,不屈从权势的压力,做到公正、公平。具有褒义色彩。

Example

Used as predicate, object or attributive. (作谓语、宾语、定语)
1
Zhège
这个
yuàn
法院
yuànzhǎng
院长
tiěmiàn
铁面无私
  
,
不怕
qiángquán
强权
  
,
gōngzhèng
公正
duànàn
断案
  
,
dào
得到
lǎobǎixìng
老百姓
de
hǎopíng
好评
  

The president of this court is selfless, not afraid of power, fair case, has been praised by the people.

2
Zhège
这个
gōngchéngduì
工程队
de
gōngrén
工人
hěn
hài
害怕
men
他们
de
duìzhǎng
队长
  
,
yīnwèi
因为
jiǎnyàn
检验
gōngchéng
工程
zhìliàng
质量
tiěmiàn
铁面无私
  

The workers in the engineering team were afraid of their captain because he was selfless in testing the quality of the project.

3
shì
tiěmiàn
铁面无私
de
qīngguān
清官
  
,
sòng
送礼
tuōqíng
托情
de
shìqing
事情
biè
zhǎo
  

He is an iron-faced and selfless official, don't look for him for gift-giving.