唇亡齒寒 [－－齿－]

Jyutping seon4 mong4 ci2 hon4
Pinyin chún wáng chǐ hán

Definitions (CC-CEDICT)
  1. lit. without the lips, the teeth feel the cold (idiom); fig. intimately interdependent
Definitions (粵典–words.hk)
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