岁月深知
[suì yuè shēn zhī]
Time as a Wise Witness points towards the understanding that time is an impartial observer and judge that sees all. Over years, it knows people, events, sorrows, joys, gains, and losses more profoundly than anyone. The phrase can indicate nostalgia for the wisdom earned through time's passage, along with a deeper recognition of its irrevocability and solemn weight in human experience.