I do not know what title to call Hoang Dung, the author of this book. In terms of his profession as a doctor, but the position of physician will not increase the value of this book at all. He is not a writer, although he occasionally writes a couple of articles. Truck driver it’s not just my job it’s my life poster. Even he is the author of this genealogical research, he does not admit to being an editor.One thing is certain: he is an avid reader, with the habit of recording what he has drawn from the pages of his books read.