Introduction to the Flag Platform: The Flag Platform outside the Royal Mausoleum in Hue was formerly a platform for grand ceremonies held by the Nguyen Dynasty and is an ancient building in Hue. It stands in front of the Meridian Gate of the National Palace in Hue and behind Fu Wen Tower, facing Yu Ping Mountain in the distance. It was built in the 8th year of Gialong in the Nguyen Dynasty (1809 AD). The platform is divided into three floors, the lower floor is 5.6 meters high, the middle floor is 5.8 meters high, and the upper floor is 6 meters high. The flag stand towers into the clouds and can be seen dozens of miles away.