sāntiānbùdǎshàngfángjiēwǎ
spare the rod, spoil the child
三天不打，上房揭瓦 sāntiānbùdǎshàngfángjiēwǎ
- spare the rod, spoil the child
- (idiom) Three days without a beating and a child will climb onto the roof to rip off the tiles; describes a child who becomes unruly or mischievous if not disciplined regularly.