谁许谁天涯海角谁许谁地久天长
[shéi xŭ shéi tiān yá hăi jiăo shéi xŭ shéi dì jiŭ tiān zhăng]
This poetic phrase speaks about making eternal promises or commitments, emphasizing how someone would pledge lifelong companionship no matter how far apart they are ('to the ends of the earth'), highlighting dedication in relationships.