东西南北不过凉生南来北往不过凉人
[dōng xī nán bĕi bù guò liáng shēng nán lái bĕi wăng bù guò liáng rén]
An expression of loneliness where no matter how many people you encounter ('South and North') they do not warm your heart ('Cool People'). It describes a state of cold indifference despite meeting various individuals.