Liao Upper Capital and Liao Central Capital were built by imitation with the Hans Chang-An Tang and Lou-yang. Like Pou-Hai Upper Capital and Song Biang-jing, the basic form regards capital in the Tang Dynasty as the original version too it is like this too on the overall arrangement of the city. Though two capitals of the Liao Dynasty didn't have complete plan as Tang Chang-An, but like Liao Upper Capital and Song Biang-jing, they were the standard triple city. The palace of Chang-An and Lou-yang were linked with emperor (inside) city, but weren't put on among them. In addition, the defense installation of the capitals in the Song and Liao Dynasty was relatively intact, the room of two capitals in the Liao Dynasty originally opened the door to the east, and the space was set up for tents. Those were obviously inherent custom and culture of the Khitans.