海誓山盟 [－－－－]

Jyutping hoi2 sai6 saan1 mang4
Pinyin hǎi shì shān méng

Definitions (CC-CEDICT)
  1. to pledge undying love (idiom); oath of eternal love
  2. to swear by all the Gods
Definitions (Kaifangcidian)
  1. （沒有對應漢語詞彙）