The first time Pucheng saw her appearance was at the entrance of Lhasa Railway Station when he came back from his job alone to travel to Tibet at the end of summer last year. One of them is her; the other is her father. It was not until later, perhaps because Pucheng had done so many good deeds in his life that he moved God, that his family happened to be sitting across from him, and someone told him: This is Xiaoshan. At that time, Pucheng was able to combine the name with the entity, but he was secretly surprised. He always thought that a girl who could not be succumbed to the rebellion and come to the roof of the world to play, should always be a bit unruly and sharp, but she always smiled and had a very gentle attitude. It wasn't until the train started and everyone got acquainted that they started talking to each other, so they chatted more and more, and they still smiled and had a gentle attitude. When she got off the bus in Lanzhou, it was drizzling, and Pucheng stood in the rain step by step to watch her leave. He knew that he didn't end up in Lanzhou because he told her in the car that he wanted to eat Lanzhou beef. It seems that we haven't seen each other for more than half a year since then. In short, in Pucheng's memory, she is already his sweetheart.