就让大雨冲发记忆中的沙
[jiù ràng dà yŭ chōng fā jì yì zhōng de shā]
'Let heavy rain wash away the sand of memories'. Metaphorically speaking, this suggests a process of healing over painful memories and letting go past troubles as if they are gradually carried off by downpour, bringing out emotions like catharsis, relief and new beginnings after a tough experience.