What are the folk customs of building a house? Taking China Siheyuan as an example, this paper discusses the relationship between China's humanistic spirit and residential buildings.

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.