Her name is Jian Han. She is a homebody. She has just finished the torturous college entrance examination. After stumbling, she was lucky enough to be admitted to the finance department of a certain polytechnic university. Her father, Jian Yun, is a Ph. D. In mineral processing, and is somewhat inappropriately known as an "alchemist" in the world. A few years ago, Jian Yun received a mysterious mission to visit Miao territory and has continued to this day. This summer, Jian Han decided to visit him. The black-haired boy, the young girl with silver bells, the mysterious backpacker... All the stories start from here...