爱到尽头覆水难收
[ài dào jĭn tóu fù shuĭ nán shōu]
Love Has Reached Its End and Water Once Poured Cannot Be Undone: Symbolizing finality or the impossibility of revoking actions or feelings after love has come to its bitter end, similar to saying 'once spilled water cannot be collected again.' It conveys a sentiment of irreparable consequences resulting from broken love.