Miyagi Site is located in Shuangtai Village, Dajie Township, daming county. There have been many floods in the history of Daming Fucheng. In the past, people's understanding of Miyagi basically stayed in the relevant records of Geography 1 in the History of Song Dynasty: "Beijing. In the second year of Li Qing, Daming House was built as the capital.

Miyagi took the 198 step on Wednesday, which means Shinchan stayed in the palace ... "... After exploration, it was found that the Miyagi city wall was made of rammed earth and was in an irregular rectangle. The east wall and the west wall are slightly longer, while the south wall and the north wall are slightly shorter, with a circumference of about1920m. The remaining height of the city wall is about one meter. Judging from its good plane continuity, the preservation of the city wall is acceptable. The city direction is about 13 northeast. There are 6 city gates or * * sites suspected to be city gates on the city wall, including 3 south city walls, 3 east city walls 1, 3 west city walls 1 and 3 north city walls 1.

At that time, the population of Daming House in Beijing was over one million. It was mentioned many times in the Water Margin, but it was later submerged. This Song Cheng is completely preserved in the Yellow River sand below 4m. Once unearthed in the future, it will be as shocking as the ancient city of Pompeii.