有妹妹的男的通常很温柔有弟弟的女的通常很暴力
[yŏu mèi mèi de nán de tōng cháng hĕn wēn róu yŏu dì dì de nǚ de tōng cháng hĕn bào lì]
'Brothers Usually Gentle with Sisters; Sisters with Brothers Often Aggressive' portrays stereotypes where boys are expected to be gentle with their sisters while girls with brothers might act more aggressively. This is a cultural observation about sibling dynamics.