童叟無欺 [－－无－]

Jyutping tung4 sau2 mou4 hei1
Pinyin tóng sǒu wú qī

Definitions (CC-CEDICT)
  1. cheating neither old nor young (idiom); treating youngsters and old folk equally scrupulously
  2. Our house offers sincere treatment to all and fair trade to old and young alike.
Definitions (粵典–words.hk)
  1. x
Definitions (Kaifangcidian)
  1. （沒有對應漢語詞彙）