Everyone has a single regret in their life, the regret of letting all things become different, the regret of life leaving without a trace, and when the fragile destiny is spinning, you will forget how far you have come without looking up, and then return to your own destiny, knowing that regret is coming. Looking back, I remember that I once had it and abandoned it, because since I chose to forget it, why should I remember it in the future, and why should it be earth-shattering.
Just because I thought like this and left quietly without leaving any trace, I never cherished anyone. In the years of time travel, we have all learned to let it go. As soon as we turn around, we miss the person standing there waiting for us.