悬崖勒马
xuányálèmǎ
=
悬
+
崖
+
勒
+
马
Idiom, Proverb or Saying: to act in the nick of time
eg.
j/23#0
⇐
悬崖勒马xuányálèmǎ = 悬 + 崖 + 勒 + 马