Twenty-five streets criss-crossing the east, west, north and south in Chang 'an City divide the whole city into two cities and one hundred and eight squares. Among them, Zhuque Street divides the urban area into two parts: the east belongs to Wannian County, and there should be 55 squares. Qujiangchi in the southeast corner of the city occupies the land of two squares, so it actually leads 53 squares; It belongs to Chang 'an County in the west, with one city and 55 squares.
There are six high slopes in the north and south of Zhuque Street in Chang 'an, like Ganbu. So the palace was built in the position of 92, which is the residence of the emperor-seeing dragons in the fields; Set up one hundred divisions in the position of 1993 to meet the number of gentlemen-gentlemen work all day; And the ninth five-year plan-the flying dragon is in the sky, and then Du Xuan Temple and Xingshan Temple will be established to curb it.
The biggest architectural feature of Chang 'an City is that the streets in the city are all east, west, north and south, neatly arranged, in the right direction, carefree and spacious, just like a chessboard with clear rules. Bai Juyi, a poet in the Tang Dynasty, vividly described the layout of Chang 'an City in Tang Dou as "a thousand schools of chess, and twelve streets are like vegetable fields" (here twelve streets are imaginary). We are talking about the Li Fang system of Chang 'an. Chang 'an has 108 squares, the layout is symmetrical with the central axis, and each square has different intentions.
The "Li Fang" in Chang 'an City consists of four east-west streets and 1 1 north-south streets in Guo Cheng. When Emperor Wen of Han first built Daxing City, this checkerboard grid area was named "Fang", when Yang Di built the city, it was renamed "Li", and in the Tang Dynasty it was also called "Fang". Therefore, the combination of "separation" and "release" can often be seen in Tang poetry.
Yao, a poet in the Tang Dynasty, wrote in his poem "New Field Well": "Old guests are always happy, but Jing Quan is muddy and salty. Extending life in a new house, Jing Quan is sweet. " Jia Dao, who is also called "Yao Jia" with Yao He, has a poem "Living in the Jingshe in Yanshouli", also called Yanshouli.