Why are we going to that place? A bridge in the movie, a song, a past event, an old friend?

I wanted to go to Chengdu, Sichuan in 20 17 for a simple reason: my predecessor was studying in Chengdu at that time. So I really yearn for the place where he stayed. We are in a different place, I am in Fuzhou and he is in Chengdu, separated by three provinces. During the time with him, he came to me by plane. I always thought that I would have a chance to go to Chengdu, just as the lyrics of Chengdu wrote, "Walk with me on the streets of Chengdu until all the lights go out. You hold my sleeve and I put my hand in my trouser pocket and walk to Yulin." 20 18 when we parted, I thought I would never set foot in this beautiful city of Chengdu again. At that time, I didn't even have the courage to listen to the song Chengdu. Now that he has a girlfriend, I have learned to let go, but I always hope to walk through every street he walks.