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Jyutping ji5 ting3 baat3 fong1
Pinyin ěr tīng bā fāng

Definitions (Wiktionary)
  1. phrase, idiomatic
    to keep one's ear to the ground; alert; watchful; vigilant
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)