不必海誓山盟不用海枯石烂
[bù bì hăi shì shān méng bù yòng hăi kū shí làn]
The literal meaning would be "No need for grand vows, no waiting until the sea dries and rocks crumble", which expresses a desire for simple, genuine emotions. It reflects disinterest in flamboyant promises that are unlikely to come true, preferring instead the quiet and steady development of love over the ages.