This book begins with Yuan Shikai's military training at the small station and ends with Zhang Xueliang's change of banner in the Northeast. It lasts for fifty years and outlines the historical picture of warlord disputes in the late Qing Dynasty and the early Republic of China. Beiyang warlords refer to the soldiers who supported the military and participated in politics during the Beiyang era. Most of them were protected by Yuan Shikai, and they called themselves "We Beiyang Group" and "We Beiyang Faction". The Beiyang Warlords not only represent Yuan Shikai and his forces, but also represent the period when they ruled most of China. "The History of Beiyang Warlords" is the masterpiece of Mr. Ding Zhongjiang who has accumulated many years of hard work. It has rich information and complete descriptions. It is of great reference value for the study of modern Chinese history, especially the history of Beiyang Warlords. It is a historical book that can not only increase knowledge but also be read and appreciated, just like a literary work. The author uses news analysis techniques to process a large amount of historical data, which is well organized and has a unique vision. The book is accompanied by a large number of precious materials and pictures, which is extremely helpful in filling the gaps in historical works about the early years of the Republic of China.