心碰心

xīnpèngxīn ㄒㄧㄣ ㄆㄥˋ ㄒㄧㄣ

    • to treat each other sincerely and honestly

Character by character

Saying俗语俗語

Idiom惯用语 · Rarely used now

Literally
heart meets heart
Meaning
Treating each other sincerely and honestly.

Sources