Daming Palace is the main palace, the political center and national symbol of the Tang Dynasty. It is located in Longshouyuan, north of Chang 'an (now Xi 'an) in Tang Dou. It is the largest of the three main halls of Chang 'an in Tang Dynasty (Daming Palace, Taiji Palace and Xingqing Palace), and is called "Dongnei".

Daming Palace in Tang Dynasty covers an area of 3.5 square kilometers, which is equivalent to 3 Versailles, 4.5 Forbidden City, 12 Kremlin, 13 Louvre and 15 Buckingham Palace, fully demonstrating the magnificent features of Miyagi architecture in Tang Dynasty.

Miyagi city gate:

There are nine gates in Daming Palace Miyagi * * *, with Fengdan Gate, the main entrance of Daming Palace, and Wang Xianmen and Fu Jian Gate on both sides. Xuanwu Gate is in the middle of the north, and Han Yin Gate and Xiaoqing Gate are in the east and west respectively. To the east is the left inkpad door; There are right Yintai Gate and Brewmaster Gate in the west.

The main entrance, Fengdan Gate, has five doorways, and all other doors have three doorways. There is a mezzanine city parallel to the city wall in the east, west and north of Miyagi, and a heavy Xuanmen is set in the middle of the north, facing the Xuanwu Gate.