投桃報李

Simplified: 投桃报李

tóutáobàolǐ ㄊㄡˊ ㄊㄠˊ ㄅㄠˋ ㄌㄧˇ

    • toss a peach, get back a plum (idiom) to return a favor
    • to exchange gifts
    • Scratch my back, and I'll scratch yours.

Character by character

Sources