吃人家的嘴软，拿人家的手短 | 吃人家的嘴軟，拿人家的手短
chī rén jiā de zuǐ ruǎn , ná rén jiā de shǒu duǎn
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1
lit. the mouth that has been fed by others is soft, the hand that has received doesn't reach (idiom)
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2
fig. one is partial to those from whom presents have been accepted