禮尚往來 [礼－－来]

Jyutping lai5 soeng6 wong5 loi4
Pinyin lǐ shàng wǎng lái

Definitions (CC-CEDICT)
  1. lit. proper behavior is based on reciprocity (idiom)
  2. fig. to return politeness for politeness
Definitions (CC-CANTO)
  1. (saying) 1. Reciprocate; 2. Treated others with kindness as how they will treat you back;/Be kind to others that begets kindness in return
Definitions (粵典–words.hk)
  1. x
Definitions (Wiktionary)
  1. phrase, idiomatic
    to reciprocate a gift; to give a gift in return
  2. phrase, idiomatic
    to reciprocate the courtesy shown to you by another; to treat others as you would like to be treated
Definitions (Kaifangcidian)
  1. （沒有對應漢語詞彙）