쇠귀에 경 읽기
soegwie gyeong ilkki · Reading a sutra into a cow's ear.
Telling someone something they won't take in, however often you repeat it.
When to useGiving the same advice for the fifth time.
Think ofLike talking to a brick wall.
Examples
일찍 자라고 몇 번을 말해. 완전 쇠귀에 경 읽기네.
How many times do I say sleep early? It's sutras to a cow.