If life is just like the first sight, the sadness and beauty can only be fixed in the memory. Maybe one day turn around and leave a beautiful figure far away. The perfect arc will tell the nostalgia for yesterday. Perhaps, among the people we know, there have been misunderstandings and gains and losses, and you will remember the beauty at first sight. It's a friend or sweetheart I haven't seen for years, but after many years, things have changed. People may become like strangers, but the people you remember in the past and those you remember can't overlap. I feel very sad.