Correct
劳心
/ láoxīn /
Strokes
Definition
to work with one's brains/to rack one's brains/to worry
Example
As a Verb
take trouble; take pains
1
Bù
不
wéi
为
xiǎoshì
小事
láoxīn
劳心
。
Never be worried by trifles.
As a Verb
undertake mental labour/work; work with one's mind/brains
2
Láoxīnzhě
劳心者
brainworker
As a Verb
be worried/concerned (about)