Michel Duc Chaigneau's book (1803-1894) records the memories of Hue Citadel by a French-Vietnamese. Through this memory, readers today can visualize the appearance of ancient Hue and its surrounding areas with the whole life from the palace to the normal village, access to a more reliable document about Hue, contribute to understanding the multi-dimensional French-Vietnamese relationship with specific angles. The content of the book includes the following sections: Hue Imperial City: East-West Cultural Exchange Center; Memory of the Imperial City of Hue: The palace of memories or the labyrinth of remembrance; Memories of Hue Citadel of a Frenchman returning to Annam in the first half of the 19th century.