小时候谁许谁地老天荒
[xiăo shí hòu shéi xŭ shéi dì lăo tiān huāng]
An evocative expression that refers back to childhood promises made about growing old together (until 'the earth grows old, heaven changes'). It expresses nostalgia over childhood dreams and vows of eternal devotion that were once believed but now reflect on past hopes and promises.