The main building of Ziyun Mansion is 39 meters high and has four floors, with a construction area of 8,632 square meters. It adopts the architectural form of double eaves, which is the most distinctive architectural form in the Tang Dynasty. Only the royal family can use it, which embodies the supremacy of imperial power. At the same time, the eaves of each floor have the design of pheasant tail, which is more colorful with three layers of gold ornaments. On the second and third floors, there are wide flat seats, pavilion arches and pavilion bridges, which are magnificent. It reproduces the majesty, luxury, atmosphere and grandeur of the royal family, fully embodies the myriad changes of the weather and the elegant charm of the court in the prosperous Tang Dynasty, fully demonstrates the historical spirit and the majestic spirit of the times in the prosperous Tang Dynasty, and gives people a strong artistic shock. The first floor is the grand occasion of the reign of Emperor Taizong and Li Shimin for 23 years. The second floor is the elegant demeanour of Li Longji, the emperor of the Tang Dynasty-Kaiyuan Shi Sheng. The third floor is the performance area. The fourth floor is Ziyun Ruyi Tower, the treasure of Tang Furong Garden.