四合院 is a traditional Chinese courtyard house, commonly found in northern China, especially in Beijing. It consists of a central courtyard surrounded by four buildings, typically arranged in a square or rectangular layout. The buildings serve different functions, such as living quarters, kitchens, and storage spaces, promoting family unity and communal living. The design of 四合院 emphasizes harmony with nature and privacy. The layout allows for natural light and ventilation while providing a sheltered environment. This architectural style reflects the cultural values of Confucianism, emphasizing family ties and social order, making it an important symbol of traditional Chinese life.