Correct

画地自限

/ huà dì zì xiàn /
Strokes

Definition

lit. to draw a line on the ground to keep within (idiom)/fig. to impose restrictions on oneself

Example

Definition

impose restriction on oneself

1
yào
不要
huà
xiàn
  
,
zhǐ
只读
自己
de
zhuān
专业
shū
  

You shouldn't confine yourself to reading only on your own subject.