无心话伤有心人无声爱毁有情人
[wú xīn huà shāng yŏu xīn rén wú shēng ài huĭ yŏu qíng rén]
Means ‘casual words hurt people who have intentions; silence destroys those who love’. It conveys deep pain caused unintentionally by thoughtless words or actions leading to broken relationships due to misunderstanding or neglect.