禮尚往來

Simplified: 礼尚往来

lǐshàngwǎnglái ㄌㄧˇ ㄕㄤˋ ㄨㄤˇ ㄌㄞˊ

    • lit. proper behavior is based on reciprocity (idiom)
    • fig. to return politeness for politeness

Character by character

Sources