Correct

收心

/ shōuxīn /
Strokes

Definition

to concentrate on the task/to curb one's evil instincts

Example

As a Verb

get into the frame of mind for work/study; concentrate on more serious things

1
Zhè
háizi
孩子
xiànzài
现在
wán
le
  
,
shōu
zhù
xīn
le
  

The child can't get his mind off play now.

2
děi
ràng
xuésheng
学生
shōuxīn
收心
  

You must have the students settle down to their studies.