脣亡齒寒 [唇－齿－]

Jyutping seon4 mong4 ci2 hon4
Pinyin chún wáng chǐ hán

Definitions (Wiktionary)
  1. phrase, idiomatic
    to share a common lot; to share the same fate
    (syn.) 唇齿相依, 脣齒相依
Definitions (Kaifangcidian)
  1. （沒有對應漢語詞彙）