In the application of color, it also fully embodies the idea of "five elements".
Palace walls and columns are red, red is fire, and they are aboveboard.
The roof is yellow, belonging to the earth, belonging to the middle, and the emperor must be in the middle.
The roof in the east of the palace is green, which belongs to oriental wood green and spring, and is used for the residence of the prince.
Tianyimen in the north of the imperial city, the wall color is black, and the water in the north is black.
All single buildings have different colors because of their different attributes. The Wen Yuan Pavilion, where books are collected, uses black tiles and black walls, and black is water, which can suppress fire and is beneficial to the collection of books.
In the Wen Yuan Pavilion on the second floor, the upper floor is a big room, and the lower floor is divided into six rooms, which embodies the idea of "water is born naturally, and the earth is born 60%" in the Book of Changes.
There are no trees planted from Tiananmen to Duanmen, which means that the south belongs to fire.
The layout of architectural feng shui is also reflected in the fact that the name conforms to the principle of the Book of Changes.
The beautiful main entrance at the southern end is in line with the divination that "the sun, the moon and the sky are all beautiful".
Shuncheng Gate and Anzhen Gate are located in the northern harem, which accords with Kun's divination that "everything is born in Yuan" and "the land of Anzhen should have no boundaries".
The emperor's palace and the queen's Kunning Palace are in line with the meaning of Gan and Kun.
It is not suitable to add firewood to make a fire, which is not conducive to disaster prevention of forest structure.
Extended data
Modern reconstruction
19 1 1 After the demise of the Qing Dynasty, Beijing was rebuilt. In order to improve traffic and build the railway around the city, the urn of Zhengyangmen, Chaoyangmen, Xuanwumen, Dongzhimen and Andingmen, the imperial city wall and Donganmen have been demolished successively.
1924 opened the Peace Gate on the inner city wall, and 1937 opened the Qiming Gate (Jianguomen) and the Chang 'an Gate (Fuxing Gate) (these two are actually missing a whole gap).
After 1949, Beijing was demolished on a large scale.
During the Korean War, in order to facilitate the evacuation of people, gaps such as Dongsishitu, Xiaojie and Xinjiekou were added to the inner wall.
195 1 to 1958 Demolition of outer city walls, gates and watchtowers.
Zhonghua Gate, Chang 'an Left Gate, Chang 'an Right Gate and Di 'an Gate were demolished in the 1950' s. ..
1965 to 1969 Demolition of inner city gate and city wall.
The east, west, south and three sides of the inner city moat were also covered and changed into underground ditches, which became a part of the urban sewer system.