The ancients believed in feng shui, believing that feng shui would affect the fortunes of generations. During the Ming and Qing dynasties, in the 5 directions of the southeast, southwest, and northwest of Beijing, 5 towns were set up, and the central town was Jingshan, which was built by Zhu Di of the Ming Dynasty, in addition to being used to suppress the dragon vein of the former dynasty, but also had the effect of changing the fate of feng shui, which also affected the location and pattern of Beijing City
In 1421 AD, the third emperor of the Ming Dynasty, Ming Chengzu Zhu Di officially moved the capital to Beijing City, but at that time the beijing city planning was still the same as in the Yuan Dynasty, Ming Chengzu Zhu Di moved the capital, could not accept the use of the previous dynasty's architecture, in addition, the Yuan Dynasty Emperor's residence in the palace, Yanchun Pavilion, made Ming Chengzu feel obscure, so the reconstruction of Yanchun Pavilion became his primary task after moving the capital.
In the fourteenth year of Yongle (1416 AD), Zhu Di began to renovate the city of Beijing, and deliberately moved the north wall of the Forbidden City 500 meters to the south, moved the Yanchun Pavilion out of the palace, and also used the soil dug out of the moat to pile a mountain on the site of Yanchun Pavilion, named Zhenshan, which means to suppress the former dynasty, and this mountain was called Jingshan by later generations, because he wanted the Forbidden City to have the geographical conditions of back mountains and water, so he built jinshui bridge and Jingshan Mountain.
However, the capital of the Yuan Dynasty, Yuan Dadu, was built in 1267 according to Taiji Bagua, of which the central point of Taiji is near the current Silver Ingot Bridge, and the city of Beijing is laid out at this point, so the feng shui position is excellent, but after the north wall of the Forbidden City is moved south, the feng shui of Beijing City is also affected, so the center point of Taiji must also be moved south, and this location just falls on Jingshan, so that Beijing City moves south with it, and also becomes the urban foundation of Beijing in the future.