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Jyutping bat1 ting1 lou5 jan4 jin4 , hek3 kwai1 zoi6 ngaan5 cin4
Pinyin bù tīng lǎo rén yán , chī kuī zài yǎn qián

Definitions (Wiktionary)
  1. proverb
    ignore your elders at your peril

不聽老人言,吃虧在眼前 [-听-----亏---]

Jyutping
Pinyin bù tīng lǎo rén yán , chī kuī zài yǎn qián

Definitions (CC-CEDICT)
  1. (idiom) ignore your elders at your peril