lit. smile and forget the song (idiom); fig. to forget one's roots and live to see another

We thought that the "hook on the hook" will really be "a hundred years the same" We believe that "forever", believe that feelings will not fade, will be able to overcome the time and space But when we stand in the thirty-year-old intersection But when we stand at the intersection of thirty years old, we stop and look back to find that most of the familiar faces that accompanied us as we grew up have been blurred and disappeared. All the way walking, all the way harvesting, but also all the way discarding the past, those things that we thought we would never be able to forget, it turns out that we really do forget without realizing it, and let go of it. However, sometimes, we still can't help but miss those pure and intense youthful moments that we shared together.