This book carefully sorts out the latest correspondence between Teacher Qin and young readers and some essay collections from hundreds of thousands of words. In this book, Mrs. Qin as a friend answers the doubts encountered by young readers during their growth, showing Mrs. Qin’s class book with the same theme. This "A Music Box" is different from other volumes in style. The script presents the delicate sincerity of a female writer, about friendship, about happiness, about time, about how to deal with life... They all exemplify the life reflection of the writer from self-experience and the concern for the growth of young people. The sincere words, like the beautiful music, are rippling in the hearts of young readers; they also are like little orange lights, illuminating the path of the little reader.