What is the patio for?

The role of patio in traditional houses: \x0d\ 1. Drainage. This is the most common view. Textbooks in our country generally say so, and it is listed as the first and biggest function of patio, which is also accepted by the society. The book "The Old House Huizhou Dwellings in Southern Anhui" written by Confucianism sums up the biggest feature of Huizhou Dwellings as "five mountains rise to the sky and four waters return to the hall". The main function of the patio here is drainage. \x0d\ 2。 Lighting and ventilation. This view is accompanied by the "drainage theory" and the concept of lighting and ventilation, but it is considered that drainage and lighting and ventilation pass by. In fact, ventilation is tighter than drainage, because some houses are not very deep, especially the wing rooms, and the roof slope is shorter, so the roof drainage problem can be completely solved by long slope or similar modern gutter form. After living in Huizhou for two years, Professor Chen Congzhou, a famous expert on ancient architecture, has this understanding of patio: it is cold in the morning, hot in the afternoon, and the temperature is extremely low in the morning, so the windows on the external wall of the house are very small, which covers up the invasion of cold and heat. As for the patio, one is because there is little land in the mountains, and the other is because of the slate. The small patio saves materials, and the function of the three patios only needs to achieve ventilation and drainage, without too much sunshine "(Chen Congzhou's Purple Stone Room Remains Ink). Reading between the lines of Chen Congzhou, the main function of patio is ventilation. \x0d\ 3。 In China's geomantic omen, the patio is the tuyere, and its function lies in gathering wealth and nourishing qi. "Eight Houses Mirror" said: "The patio is the key to a house, and it is rich and dangerous. Must be flat, not immersed in the trough, not wet and dirty, there are two lanes on both sides of the hall, the walls and doors are closed normally, nourishing the spirit. Every rich patio is naturally square, followed by a well-off family, which means storage. The gate is angry and the patio is in Wangfang. Natural yin and yang are combined, and they don't need to run through all the time. Decisive day: neither high nor low, neither long nor biased, and endless fortune.