At 35, I realized that my partner’s companionship is only stage-by-stage. I was very sad, very heartbroken. At 40, I realized that my parents’ companionship is also only stage-by-stage. I was very heartbroken, very sad. When the children grow up, I’m even more surprised to find that their companionship is also only stage-by-stage. This time, there’s no sadness, no sorrow. Right now, I also understand that nothing in this world lasts forever. What people call “forever” is nothing more than stage-by-stage companionship. When I look back, I realize my own body is still aging. I’ve finally grown up. In this world, there has never been more than one person—that’s me. When I’m here, the world is here. When I’m gone, the world is gone too.