When my father walked with me to the train station, I saw many seagulls flying over the Hai River. It reminded me that when I was in middle school, I sat by the Hai River with my classmate, drinking beer and watching seagulls during the lunch break. At that time, there were not so many seagulls in our city, so they were very new to us. We talked about what they were. Normally, we called them seagulls, but it was a river. She said, "Then they are river gulls." I felt nostalgic all of a sudden and did not want to say goodbye. When I was young, there was a very popular Korean drama called "Autumn in My Heart." The protagonist said that if she had another life, she wanted to be a tree, so she would not be separated from anything around her. If a tree had feelings, it would not have been so lush green.