Imperial Academy, Huế (Quốc Tử Giám), located in the former imperial capital of Hue, was the national academy under the Nguyen dynasty in Vietnam. The Royal Academy is the first and only surviving feudal university in the country.

Following Le Van Khoi's defeat in the South, Emperor Minh Mang established a specialized agency to manage secret matters, especially military affairs. The Emperor modeled the intelligence agencies of the Song Dynasty and the military intelligence of the Qing Dynasty to create the national intelligence agency – Tam Tòa or Viện Cơ Mật – to manage confidential matters.

Phú Xuân is a ward of Huế in the North Central Coast region of Vietnam. Arrange the entire natural area and population size of Gia Hoi, Phu Hau, Tay Loc, Thuan Loc, Thuan Hoa and Dong Ba wards into a new ward called Phu Xuan ward.

Cửa Nhà Đồ, also known as Chánh Nam Môn, is one of many entrances to the Hue Imperial Citadel and is a historical site that holds cultural and architectural significance. Cu­a Nha  Do is situated in the heart of Hue City, which is known for its rich history as the former imperial capital of Vietnam. It is located in the Thua­n Hoa  neighborhood, which is within close proximity to many other notable landmarks and attractions in the city.

Cửa Chánh Đông (Cửa Đông Ba) is located on the east side and is one of the ten main gates of Hue Citadel. Dong Ba Gate was built in 1809 during the reign of Emperor Gia Long. During the reign of Emperor Minh Mang, the structure was reinforced and completed to its present-day state.

Cửa Thượng Tứ is one of several entrances to Hue Citadel and a historical monument of significant cultural and architectural importance. Located in the heart of Hue city, renowned for its long history as the capital of Vietnam, Thuong Tu Gate is situated in the Phu Hoa area, very close to many other prominent landmarks and attractions in the city.

Cửa Ngăn (Thể Nhân Môn) is a historical monument of significant cultural and architectural importance. Located in the heart of Hue city, famous for its long history as the capital of Vietnam, Ngan Gate is situated in the Phu Hoa area, very close to many other prominent landmarks and attractions in the city.

The Hue Citadel Gate (Ngọ Môn) in Hue, Vietnam, is the main gateway to Hue City, a UNESCO World Heritage site and the former capital of Vietnam under the Nguyen Dynasty. The gate is one of the most iconic architectural landmarks in Hue City and serves as the entrance to the Forbidden City, a space reserved exclusively for the emperor, his family, and his concubines.

Cửa Quảng Đức, also known as cửa Sập, is one of many entrances to the Hue Imperial Citadel and is a historical site that holds cultural and architectural significance. Cu­a Quang Duc is situated in the heart of Hue City, which is known for its rich history as the former imperial capital of Vietnam. It is located in the Thua­n Hoa  neighborhood, which is within close proximity to many other notable landmarks and attractions in the city.

Cửa Đông Bắc (Cửa Trài) is located in the northeast corner of Hue Citadel, on the west bank of the Dong Ba River. The arch was built in 1809 under the reign of King Gia Long, and the upper floor was built in 1824 under the reign of King Minh Mang.