Correct

横下一条心

/ héng xià yī tiáo xīn /
Strokes
https://i.cchatty2.com/filters:format(webp)/fit-in/684x0/img/202102/横下一条心-Chinese-idioms-Cchatty-74188e60-16d0-460e-aad1-35a89bda82ce-1612777532.jpg

Collocation

1
只好横下一条心
2
不得不横下一条心
3
只能横下一条心
4
横下一条心的精神
5
横下一条心做(某事)

Definition

横下一条心

Literally means:

steel oneself to do something

Actually means:

Being determined to do something no matter how adverse the odds are or how costly the price will be. The task is usually tough or rather risky. Commendatory.

不管客观情况多么不利,代价多大,也决心去做某件事情。所做的多是相当困难,甚至有一定风险的事情。具有褒义色彩。

Example

Used as predicate or attributive. (作谓语、定语)
1
héng
xià
tiáoxīn
条心
  
,
shǐ
即使
zuì
得罪
le
rén
  
,
diū
le
guān
  
,
yào
chuǎng
chū
tiáo
bǎituō
摆脱
guóyǒu
国有
企业
kùnjìng
困境
de
xīn
lái
  

He crossed a heart, even if offended people, lost officials, but also to break out of the plight of state-owned enterprises a new way.

2
Kàndào
看到
huǒshì
火势
yuèláiyuè
越来越
  
,
zhǐhǎo
只好
héng
xià
tiáoxīn
条心
  
,
ràng
jiā
大家
tíngzhǐ
停止
qiāng
gǎnkuài
赶快
chèjiù
撤救
物资
  
,
gǎnkuài
赶快
chèchū
撤出
lóu
大楼
  

Seeing the fire getting bigger and bigger, he had to cross a heart, let everyone stop rushing to evacuate supplies, quickly evacuate the building.

3
Jǐnguǎn
尽管
kàndào
看到
érzi
儿子
xùnliàn
训练
huílai
回来
hòu
以后
hěn
lèi
de
yàngzi
样子
  
,
hěn
xīnténg
心疼
  
,
dànshì
但是
wèile
为了
háizi
孩子
de
wèilái
未来
  
,
zhǐnéng
只能
héng
xià
tiáoxīn
条心
  
,
ràng
háizi
孩子
继续
xùnliàn
训练
xià
下去
  

Although he was very tired to see his son back from training, he was very distressed, but for the future of the child, he can only cross a heart, let the child continue to train.