Liao Mi’s younger brother is what Japanese called Hikikomori who lives reclusively and almost never gets out of his room. He did not go to work for more than ten years since graduated from the university. He is very sensitive that he can’t walk in the crowd, can’t take elevator and train; he always try to avoid meeting anyone, including his family. Mother blames herself; Father does not understand his son. Liao Mi is the only one who allowed to talk to him. Like a documentary, Liao Mi tried to write down their conversation, traced back what happened when they grew up and the relation with their parents. This book is not only trying to explore her brother’s mind, but also her and their parents’. Their conversations opened the black boxes in the family; and writing brought her to somewhere she never imagined.