Correct

脸不红心不跳

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Strokes
https://i.cchatty2.com/filters:format(webp)/fit-in/684x0/img/202102/脸不红心不跳-Chinese-idioms-Cchatty-500b3b22-fc39-491c-911a-c239b067fbdc-1612778038.jpg

Collocation

1
做到脸不红心不跳
2
能够脸不红心不跳
3
可以脸不红心不跳
4
从来脸不红心不跳
5
真的脸不红心不跳
6
竟然脸不红心不跳
7
居然脸不红心不跳

Definition

脸不红心不跳

Literally means:

assume a calm face and a composed mind

Actually means:

remain perfectly calm

It describes composure, calmness and lack of concern. It is often used to satirize one who shows no concern for the bad things that he or she has done.

形容沉着、镇静,毫不在意。常用来讽刺做了坏事却一点也不在乎的人。

Example

Often used as predicate or object. (作谓语、宾语)
1
Jiàn
le
men
我们
shēn
一身
de
shuǐ
污水
  
,
zhè
司机
rán
居然
liǎn
hóngxīn
红心
tiào
  
,
xiàng
méishì
没事
yàng
一样
jiù
chē
kāizǒu
开走
le
  

Splashed our sewage, the driver actually face not red heart do not jump, as if nothing to drive away.

2
Kànshangqu
看上去
jiāhuo
家伙
shì
guàntōu
惯偷
  
,
rán
居然
shuōhuǎng
说谎
dōu
可以
liǎn
hóngxīn
红心
tiào
  

It looks like that guy is a habitual thief, and he can lie without a red heart.

3
Tán
谈起
kǎoshì
考试
zuò
作弊
de
shì
  
,
men
他们
个个
liǎn
hóngxīn
红心
tiào
  
,
diǎnr  
一点儿
dōu
juéde
觉得
nánwéiqíng
难为情
  

When it comes to cheating in exams, they don't feel red-faced or jumping, and they don't feel embarrassed at all.