Correct

卧薪尝胆

/ wò xīn cháng dǎn /
Strokes

Definition

lit. to sleep on brushwood and taste gall (like King Gou Jian of Yue 勾践[gōu jiàn]), in order to recall one's humiliations) (idiom)/fig. to maintain one's resolve for revenge

Example

Definition

sleep on firewood and taste gall—undergo self-imposed hardships (to strengthen one's resolve to wipe out a national humiliation or to accomplish some ambition); endure hardships and temper oneself in order to accomplish one's ambition

1
xīnchángdǎn
卧薪尝胆
  
,
以期
zài
xiàjiè
下届
àoyùnhuì
奥运会
shàng
duóhuí
夺回
guànjūn
冠军
  

He endured hardships to win back the championship at the next Olympic Games.