What is a general quadrilateral like? You'd better attach a photo.

Siheyuan is the floorboard of traditional houses in the north, with the main room, inverted room and east-west wing surrounding the Intermediate People's Court to form a plane layout. It has the longest history and the widest distribution in China, and it is a typical form of Han folk houses. Its history has been more than 3000 years, and its form has begun to take shape in the Western Zhou Dynasty.

The quadrangles in Shanxi, Shaanxi, Beijing and Hebei are the most representative.

In Beijing's hutongs, there are many quadrangles surrounded by houses in the east, south, west and north. This is a quadrilateral. [Edit this paragraph] Beijing Siheyuan is an inner courtyard house, surrounded by houses in the east, west, north and south. Beijing quadrangles, as the main architectural form that old Beijingers have lived in for generations, are well-known at home and abroad and all over the world.

The gate of quadrangles is usually opened in the southeast corner or northwest corner. The north house in the yard is the first one, which is built on the masonry abutment, bigger than other houses, and it is the owner's living room. There are east and west wing rooms on both sides of the yard, where the younger generation live. There is a corridor between the main room and the wing room for people to walk and rest. The walls of quadrangles and houses facing the street generally do not open windows, and the environment in the courtyard is closed and quiet.

There are large and small quadrangles in Beijing, but no matter how big or small, they are all made up of quadrangles surrounded by houses on all sides. The simplest quadrangle has only one yard, while the more complicated one has two or three yards. The deep house compound where rich people live is usually composed of several quadrangles side by side. There is also a partition wall in the middle.

The typical characteristics of quadrangles are regular appearance, symmetrical midline and extremely flexible usage. They expand to large ones, that is, palaces and palaces, and shrink to small ones, that is, houses of ordinary people. The resplendent Forbidden City and ordinary farmers' homes in the suburbs are all quadrangles.

Siheyuan is generally distributed as gate, first courtyard, lobby, second courtyard, bookstore, residence and so on. There are wings on both sides, and each room has a corridor, which is connected by doors. Understanding folk houses on the surface will certainly promote and develop folk house culture.

First of all, it has a long history. Since Beijing was formally established as the capital in Yuan Dynasty, quadrangles and palaces, office buildings, blocks and hutongs in Beijing have appeared at the same time. According to Xiong Dui's analysis at the end of Yuan Dynasty, "Dadu street system, north and south are called meridians, and east and west are called latitudes. The street is 24 steps wide, with 384 long lanes and 29 narrow lanes. "

Secondly, the composition of quadrangles has its uniqueness. Its courtyard is spacious, surrounded by independent houses and connected by verandahs, making it very convenient to live; Closed doors make quadrangles have strong privacy, and closed doors come from heaven and earth; All four doors in the courtyard are open to the courtyard, and home and music are beautiful; The spacious courtyard can also plant trees and flowers, feed birds and fish, and stack rocks and scenery to let residents enjoy the beautiful scenery of nature.

In addition, although quadrangles are residential buildings, they contain profound cultural connotations and are the carriers of China traditional culture. The construction of quadrangles pays great attention to geomantic omen and geomantic omen theory, which is actually an ancient architectural environmentology in China and an important part of China's traditional architectural theory. The decoration, sculpture and painting of quadrangles also reflect folk customs and traditional culture everywhere, showing people's pursuit of happiness, beauty, prosperity and auspiciousness, such as the pattern composed of bats and longevity characters, which means "longevity and happiness"; The Chinese rose pattern in the vase means "peace in the four seasons"; The auspicious words embedded in the door hairpin and the door head, the couplets stuck on the pillars and the masterpieces of calligraphy and painting hung indoors are all ancient teachings of the sages and philosophers. They use ancient and modern famous sentences, or praise the beauty of mountains and rivers, or learn to live in the world, or recite the ambition of a swan. They are elegant and full of rich cultural atmosphere, just like the halls of traditional culture in China.