The dragon, known by the character "long", is a mythical creature steeped in supernatural qualities, standing at the forefront among the four sacred animals: "dragon, unicorn, tortoise, phoenix". It emerged thousands of years before the Common Era, gradually elevated to a symbol in East Asian culture. The dragon is seen as the ruler governing the rivers and seas, often referred to as the Dragon King.

The painting "Long van khe hoi" (Nine dragons in the clouds) is a masterpiece on the ceiling of the old main hall of Dieu De Pagoda, which has been moved around 20 meters backward, and is currently being well preserved to the surprise of many. The painting used to be a topic of heated debate for many years regarding whether to keep in the old main hall or to dismantle it. Dismantling it also meant erasing this masterpiece.

For the first time, more than 100 documents, containing royal seals and autographs, along with many images about the story of the construction of Hue Imperial Citadel, were vividly reenacted through an exhibition held right in the Flag Tower (Ky Dai) area, the Upper Surface of the Citadel rampart, Hue Imperial Citadel.

The outdoor exhibition at Phung Tien Palace, Hue Imperial City offered viewers an opportunity to learn about the architecture, spiritual life under the Nguyen Dynasty as well as the cultural, historical and artistic values of this era through virtual reconstruction combined with reality.