心换心

Traditional (Taiwan): 心換心

xīnhuànxīn ㄒㄧㄣ ㄏㄨㄢˋ ㄒㄧㄣ

    • to repay sincerity with sincerity
    • genuine treatment wins genuine treatment

Character by character

Saying俗语俗語

Idiom惯用语 · Widely known

Literally
heart for heart
Meaning
Exchanging sincerity for sincerity: genuine treatment wins genuine treatment in return. Approving.

Sources