When you have three daughters, you sleep with the door open.
More Korean Proverbs:
Three years will eradicate even murderous thoughts.Korean
In the valley where there are no tigers the hare is king.
Korean
The frog forgets that he was once a tadpole.
Korean
A poor old horse will have a worn out tail.
Korean
The bull that is used to the sun shivers by the light of the moon.
Korean
The thief hates the moon.
Korean