最凉不过人心最热不过人身
[zuì liáng bù guò rén xīn zuì rè bù guò rén shēn]
'Hearts can be coldest, human flesh can be warmest.' It conveys a deep reflection on the contrast between cold human nature and the passion hidden within every person, pointing out that appearances might deceive as there may lie intense emotions behind superficial aloofness.