When people come to this world, they will encounter many people and many things in addition to life, old age and death. The ordinary life torments us again and again, and the hope in their hearts is always extinguished by the difficulties of life. We are born mediocre, eager to change our embarrassing situation through efforts. We live a mediocre life every day, eager to enrich our life by pursuing our dreams and get rid of the troubles caused by mediocrity. We will always encounter many unforgettable things. With the passage of time, these memories become more and more blurred. In order to keep these memories, I can only seal them in my mind forever by writing them down. Every time I open the book, I can still remember those precious pictures, the time I spent alone.