残花败柳水性杨花
[cán huā bài liŭ shuĭ xìng yáng huā]
A phrase often used pejoratively to describe women considered unfaithful or easily persuaded to change their minds in matters of love and relationships. 'Withered flowers and broken willows' represents decline, and 'pliable willow leaves changing like the wind' depicts instability or infidelity.