Correct

恨铁不成钢

/ hèn tiě bùchéng gāng /
Strokes

Definition

lit. to hate iron for not becoming steel/to feel resentful towards sb for failing to meet expectations and impatient to see improvement (idiom)

Example

Definition

wish iron could turn into steel at once—be anxious for sb to improve; regret that sb does not live up to one's expectations

1
Jiàoliàn
教练
duì
huǒ
发火
  
,
shì
hèntiěchénggāng
恨铁不成钢
  

The coach was exasperated with him only because he did not make progress as much as expected.