1. Direction introduction
Direction position. East, south, west and north are the basic directions; Northeast, southeast, etc. It's the middle direction. In birthdates, the diagonal distance between two planets is called azimuth. Eight house geomantic omen determines the sitting direction of the house according to the orientation of the gate.
The orientation of eight homes corresponds to eight kinds of hexagrams, namely, earthquake, separation, exchange, hurdle, Xun, Kun, Gan and Gen. The orientation of a house determines which kind of hexagrams it belongs to. East belongs to earthquake, south belongs to separation, west belongs to communication, north belongs to Kan, southeast belongs to Xun, southwest belongs to Kun, northwest belongs to trunk, and northeast belongs to Gen.
2. Introduction of wind
Wind is a natural phenomenon caused by airflow. Scientifically speaking, wind often refers to the horizontal motion component of air, including direction and size, that is, wind direction and wind speed; But for flight, it also includes vertical motion components, so-called vertical or ascending and descending airflow. Strong winds can move objects and their directions (mass of matter). The wind is very fast. The strength of the wind is expressed by the wind speed, generally measured by the size of the wind or how many meters/second, which is divided into thirteen levels.
3. the reason
Wind is a kind of air flow phenomenon on the earth, which is generally caused by solar radiation heat. Sunlight shines on the earth's surface, causing the surface temperature to rise, and the surface air to expand and become lighter and lighter. After the hot air rises, the cold air with low temperature flows in horizontally, and the rising air falls down because it gradually cools and becomes heavier. Because the surface temperature is high, it will heat the air and make it rise. This airflow is the wind.
When the gathered water vapor (cloud) forms water, its volume shrinks, and the surrounding water vapor comes to replenish it, forming wind. The wind on the earth is related to water sources. The expansion and contraction of water and steam produce wind. The wind blows from the ocean to the land, or the land blows to the ocean.
In summer, when the ground temperature is high, the air and water vapor expand and rise, so the air space on the ground should be supplemented with air and water vapor heavier than the sea surface. When the sea surface temperature is low and the air shrinks, the sea surface air space should be supplemented by the rising air and water vapor from the air with high ground temperature. In winter, when the sea surface temperature is high, the sea surface air rises, and when the ground temperature is low, the proportion of air is heavy, which supplements the sea surface space along the ground.