许我海誓山盟许我地老天荒
[xŭ wŏ hăi shì shān méng xŭ wŏ dì lăo tiān huāng]
This phrase contains two parallel expressions 'Vow me to the eternal vow till death do us apart, vow me to remain faithful until the world comes to an end'. They both represent vows made between lovers. Sea pledge mountain vow represents steadfast love that is as stable and solid as the earth; and time everlasting implies that their affection for each other would remain constant forever despite hardships in life.