This book was originally the "Secret Document" of the Secret Service under the Governor General of Indochina and kept at the National Archives before 1945, tt has now been edited and published for use as a reference of modern Vietnamese history. As it is a secret document, it's not easy for people who study modern Vietnamese history to access the original. It's a "reportage" containing many precious historical documents recorded by the current news and current affairs of the country, conducted by the people and anti-French patriots in the first 20 years of the twentieth century. The historical documents are recorded in the literary form "reportage" vividly and attractively. Although this is also about the uprising, the anti-French colonial movements, about Phan Boi Chau, Phan Chau Trinh, Dong Kinh thuc, Dong du, Thien Dia Hoi, ... but if you carefully read the book , readers will see the specific characteristics of this secret document.