In life, there are many things that are fleeting, like farewell at the station, hugging each other just now, and in the blink of an eye they are far apart; life is like this, it changes as we talk, we get tired of listening, we get tired of watching, we get slower when we follow, we fall apart as we walk, we fade away when we fall in love, we forget about thinking about it; time wears away emotions and memories, gentle and sharp; suddenly, the scenery changes; in the blink of an eye, people change.