The book contains six essays on the issues that have not yet been laid out in official history as important as it should be. They are: 1 - Sex and dynasty. 2 – “Money” - Literature and history. 3 - Add some money to the encyclopedia. 4 – Saint’s money and money’s saint. 5 –Westward journey. 6 – The TRAN dynasty (1225 - 1400). The issues discussed are not entirely absent in old history, but they are scattered, scanned, as convenient; ... so must “thanks” to the reader (Mt. Ta Chi Dai Truong) who quick-mindedly connected them together creating a panoramic picture. “Historic Idle Miscellanies” is a real miscellanies, but it is a sharp, wise and witty notes that the reader can not find in the official history. And for another reason, this is not a scientific study, but a literary work worthy of appreciation, accomplished in the last years of a historian, a cultural man. Ta Chi Dai Truong (1938 - 2016) is a Vietnamese American historian and academic researcher. He started the study of history and culture in the early 1960s in Vietnam South. In 1964, Ta Chi Dai Truong published his remarkable work, History of Civil War in Vietnam from 1771 to 1802. This work re-established the problem of the role of the Tay Son dynasty in Vietnamese history. Many of his later works also have such unique arguments and views. After settling in the United States in 1994, he began printing many valuable historical and cultural works. After the year of 2000s, these works were gradually printed and distributed in Vietnam such as Gods, People and Land and Vietnamese unofficial historical lessons.