Sun Wu was the longest ruling country among the Three Kingdoms, with four emperors, which lasted for 52 years (59 years from 222 AD). In the early years of Wei and Huang Dynasties, Sun Quan was nominally subordinate to Cao Wei and was named King of Wu. On May 23rd, the first year of Huanglong (229), Sun Quan proclaimed himself emperor in Wuchang (now Ezhou, Hubei), and Sun Wu was formally founded, and then moved to Jianye (now Nanjing, Jiangsu).

In the second year of Huanglong (230), Sun Quan sent Wei Wen and Zhuge to sail to Taiwan Province Province (known as Yizhou in history), which was the first time that China political forces arrived in Taiwan Province Province. Sun Wu owned most of Yangzhou and Jingzhou at the end of the Han Dynasty, as well as all the territory of Jiaozhou, which was later divided into Guangzhou in the northeast. Sun Wu vigorously developed the economy and made great contributions to the development of Jiangnan area.

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According to historical records, in the 16th year of Jian 'an in the Eastern Han Dynasty (2 1 1), Sun Quan moved his political center from Jingkou (now Zhenjiang) to Moling (now Nanjing). The following year (2 12), Sun Quan built a city in Stone Mountain, the original site of Jinling City, and named it Stone City.

"Stone City Week" is surrounded by seven miles and hundreds of steps, bounded by great rivers, south to Qinhuai Kou, and nine miles to Taicheng. Since the Six Dynasties, all of them have adhered to the stone, and taken the minister's garrison as the town, and its shape has won it. "There are stone warehouses and stone warehouses in the city, which are used to store military food and weapons.

The beacon tower is built at the head of the city, at the top of the mountain and along the river. Its city foundation, part of it uses the original stone of the cliff, and part of it artificially builds the "Wu Tudun" with its terrain. "Because the mountain is the city and the river is the pool, the terrain is dangerous and solid, which is very strange."

With the approval of National Cultural Heritage Administration, from June 2065438 to February 2065438, the School of History of Nanjing University, the Institute of Cultural and Natural Heritage of Nanjing University and the Qingliangshan Park Management Office formed a joint archaeological team to excavate the site of the North Wall of Shicheng in the Six Dynasties in Qingliangshan Park, Nanjing, with an excavation area of about 600 square meters.

Brick pavement of Shuncheng city wall in Sun Wu period, rammed earth city wall and turret ruins from early Eastern Jin Dynasty to Southern Dynasties, city gate ruins in late Southern Dynasties, tiles and inscription bricks in Six Dynasties were discovered. It shows the historical process of the continuous repair and inheritance of Shicheng and the architectural characteristics of the wall of the Six Dynasties.

Jiangsu Provincial Cultural Relics Bureau organized a demonstration meeting, and experts agreed that this archaeological discovery was the most important one in Shicheng archaeology over the years. Elements such as gate opening, rammed earth wall, brick wall and turret are basically clear.

At the same time, the unearthed samples of city bricks and tiles with inscriptions such as "stone" and "official" are of great significance to understanding the nature, cultural features and historical evolution of the stone city from Sun Wu to Sui and Tang Dynasties, and provide brand-new information for understanding the structure and layout characteristics of capital city walls and gate buildings in the Six Dynasties.

People's Daily Online-Nanjing found that the Stone Town site was once a military fortress of Wu Dong during the Three Kingdoms period.