人没心没肺才不会撕心裂肺
[rén méi xīn méi fèi cái bù huì sī xīn liè fèi]
This means 'Only if a person has no feelings or concerns, they won't suffer greatly.' It implies that sometimes being indifferent may lead to less pain. In Chinese culture, the word ‘heart’ can relate to emotions as well as physical organ.