China is located in the northern hemisphere of the earth, in the east of Eurasia, and most of its territory is located in the north of the Tropic of Cancer (north latitude). Sunshine comes from the south all the year round, so the house facing south is convenient for sunbathing. Sunshine has many benefits for people; First, you can keep warm. In winter, the temperature in the south house is 1-2 degrees higher than that in the north house. The second is to participate in the synthesis of vitamin D in human body, and children who often bask in the sun can prevent rickets; Third, ultraviolet rays in the sun have bactericidal effect, especially on respiratory diseases; Fourth, it can enhance human immune function.
As early as the primitive society, our ancestors built village houses in the direction of sitting north facing south, and most of the houses discovered by archaeology faced south. In business times, measuring the direction is the first step in choosing the environment. The poem Gongliu says: The scenery is just a hill, and its yin and yang are harmonious. Later, Chao Hun, a politician of the Han Dynasty, proposed. When choosing a city site, we should consider the combination of yin and yang, taste the taste of its springs and judge the suitability of its land, which is calling for a strange world. Northern Yin, Southern Yang, North and South Shanyin, Lubei Yang.
Sitting facing south is not only for lighting, but also to avoid the north wind. The topography of China determines that its air is seasonal. There is a cold current in northwest Asia in winter, a cool breeze in the Pacific Ocean in summer, and the direction of monsoon changes all year round. There are records of wind measurement in Oracle Bone Inscriptions. According to Records of the Historian, unhealthy tendencies live in the northwest, and in October. The factory lives in the north, and it is also November. The wind lives in the northeast, and the first month is also. The Ming people lived in the east and in February. The Qingming wind lives in the southeast dimension, also in April. The scenery is in the south, and it is also May. The cool breeze lives in the southwest, and it is also June. Occasionally, the wind will live in the west, and in September.
There is a difference between evil wind and yang wind. Dogs can pass through the imperial court's book "Geographical Approval to the South". It is recorded that Pingyang is not afraid of the wind, but there is a difference between yin and yang. It is no harm that the warm wind from east to south is warm and warm, which is called yang wind. The cold wind from west to north is called Ming wind, and there is a blue case. Otherwise, the wind will blow the bones and the family will decline. This means avoiding the northwest wind.
There are several ways to express the orientation of landscape painting: first, five actions are east, fire is south, gold is west, water is north and soil is middle; Second, the height of Bagua is south, the ridge is north, the earthquake is east, but it is west. Third, take Party A and Party B on the calendar as the east, Party D as the south, Geng Xin as the west and Gui Ren as the north. Take the son of the earthly branch as the north and the noon as the south. Fourth, the east is black dragon, the west is white tiger, the south is suzaku, and the north is Xuanwu. Or: Zuo Qinglong, Right White Tiger, Former Suzaku, Later Xuanwu. In short, the principle of facing south is to correctly understand natural phenomena, conform to heaven, gain the aura of mountains and rivers, be influenced by the brilliance of the sun and the moon, care for the body, cultivate sentiment and excel.