Correct

费心血

/ fèi xīn xuè /
Strokes
https://i.cchatty2.com/filters:format(webp)/fit-in/684x0/img/202102/费心血-Chinese-idioms-Cchatty-f65596a4-3556-4c01-8c36-7ea00b83de16-1612778205.jpg

Collocation

1
费了很多心血
2
费了一生的心血
3
必须费心血
4
父母费心血培养了子女
5
煞费心血

Definition

费心血

Literally means:

spend one's thoughts and energy

Actually means:

make great efforts; give a lot of care

心血 refers to one's thoughts and energy.

This phrase means taking too much trouble, giving a lot of thoughts or making great efforts to do something.

心血,心思和精力。

费心血,花费心思和精力。

Example

Used as predicate, adverbial adjunct or object, and sit can have other words in between. (作谓语、状语、宾语,中间可以插入别的词语)
1
Rèn
任何
chuàngzào
创造
míng
发明
dōu
shì
yào
fèi
pān
xīnxuè
心血
de
  
,
fèi
xīnxuè
心血
  
,
dāngrán
当然
shìchéng
一事无成
le
  

Any creation and invention is a lot of effort, you do not have to work hard, of course, nothing has been done.

2
Xuéxiào
学校
yīnggāi
应该
shìdàng
适当
zhī
组织
xiē
一些
shèhuìhuódòng
社会活动
  
,
ràng
xuésheng
学生
píng
自己
de
xìng
兴趣
  
,
dòngnǎojīn
动脑筋
jiějué
解决
nán
疑难
wèn
问题
  
,
fèi
xīnxuè
心血
huò
获得
shǒu
第一手
jīngyàn
经验
  

Schools should properly organize some social activities, so that students with their own interests, brains to solve difficult problems, and work hard to gain first-hand experience.

3
Rénmíng
人名
zhǐ
shì
dàihào
代号
  
,
jiào
shénme
什么
dōu
zhòngyào
重要
  
,
shì
可是
xiànzài
现在
de
父母
zài
gěi
háizi
孩子
míng
起名
shí
  
,
zhēnshi
真是
shā
fèi
xīnxuè
心血
  

The name is just a code name, it doesn't matter what it is called, but now parents in the name of their children, it is really painstaking.