Tan Zilin was a child who grew up in the imperial city. When he was in college, he went to the northwest of his motherland to attend school. The young man, who was born with some slowness and lack of intelligence, experienced new growth during his four years in college. During the days when he was away from home, Tan Zilin witnessed the lives of different ethnic minorities and traveled to many lands that he had never touched before. The pace of life is always in a hurry, and unexpected things intersperse it but never stop. We didn't notice it when we were walking together, but fate made us closely dependent on each other.