According to many studies by historians and archaeologists, the Phu Nam Kingdom is not a unified country but consists of many scattered tribes. There have been many important and in-depth professional studies on the Phu Nam Kingdom carried out by French and Vietnamese scientists together in the 40s of the last century. However, the Phu Nam Kingdom still has a lot of historical mysteries and many issues that need to be further studied to unravel. The book is a comprehensive synthesis of the Phu Nam Kingdom – an ancient country that existed for more than 7 centuries (from the first to the seventh centuries) in Southeast Asia. The author has combined a variety of sources: Chinese historical documents, ancient archaeological epitaphs, and the results of the excavation of the site of Oc Eo (Vietnam) – Angkor Borei (Cambodia) to reconstruct a vivid picture of this mysterious kingdom.