山盟海誓 shān méng hǎi shì

DEFINITIONS

  1. to pledge undying love (idiom); oath of eternal love
  2. to swear by all the Gods

CHARACTERS

山 shān mountain, hill, peak
盟 méng swear; oath, covenant, alliance
海 hǎi sea, ocean; maritime
誓 shì swear, pledge; oath