From love for Hue city, architect Nguyen Xuan Luc has quietly found his own way, in order to find a way to preserve and preserve Hue's unique architectural types in the face of the risk of becoming increasingly lost before the whirlwind of urbanization with a thought: sketching out each line, shape and spirit of each old palace architecture, in order to save and preserve valuable architectural heritage values for future generations before they disappear. This work includes 72 carefully detailed and detailed sketches of the patterns on the fences, walls, and gates of the heritage system of Hue's palace gates. In particular, in which the author has carefully surveyed, systematized and specified 4 architectural styles of Phu De Gate, which are still distributed in the area of 15 wards and communes of Hue city.