Correct

塌心

/ tā xīn /
Strokes

Example

As a Verb

have peace of mind; settle down; set one's mind at ease/rest

1
Wèn
问题
jiějué
解决
  
,
jiù
xīn
塌心
le
  

I was relieved as soon as the matter was settled.

2
jīntiān
今天
xià
xīn
lái
zuò
rèn
任何
shì
  

He can't settle down to anything today.

3
Rènwu
任务
wánchéng
完成
  
,
xīn
塌心
  

I cannot set my mind at ease until the task is accomplished.

4
xīn
塌心
gōngzuò
工作
  
/
xué
学习

settle down to work/studies