獅子は我が子を千尋の谷に落とす
Meanings
1
spare the rod, spoil the child; let your children face hardships to grow
Proverb meaning that parents should let their children experience difficulties so they become strong and independent. The literal image is of a lion pushing its cubs off a cliff and raising only those that climb back up.
As the saying goes, 'the lion drops its cubs into the abyss,' it is also important to deliberately give children tough experiences.