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How to determine direction

To judge whether the feng shui of a house is good or bad, you must start from various conditions. The most basic method is to look at the terrain, the center point of the house, and the orientation of the house from the center point. To judge good or bad luck. The center point and direction are the main factors that determine the good and bad luck of the house. The method of measuring the center point has been introduced before, and then the method of measuring the orientation will be introduced. If the measurement method is wrong, the judgment will be very different. Therefore, when judging the good or bad luck of residential Feng Shui, special attention must be paid to the determination of the direction. Generally, when determining the orientation of a house, a magnetic needle is placed at the center point to determine south and north. However, the north pointed by the magnetic needle is not necessarily the true north. Depending on the age of the building and the land, the north pointed by the magnetic needle often deviates from the true north. Generally, it is either slightly west or slightly east. . The north direction pointed by this magnetic needle is called magnetic north. The difference between true north and the magnetic north pointed by the compass needle is called deviation. The angle of deviation is called declination. Furthermore, the position of magnetic north is different at every moment. Why does magnetic north change with time? This is because the earth is constantly rotating and revolving around the sun. The angle difference between the earth and the sun is different every minute. Therefore, the magnetic needle is also affected differently by the black spot on the sun's surface. Therefore, the direction pointed by the magnetic needle also changes all the time. Sometimes the direction pointed by the magnetic needle will change obviously due to the influence of magnetism for several days. This phenomenon is called magnetic wind. Because of this phenomenon, the orientation measured with a magnetic needle often cannot be the same every time. The north position pointed by the magnetic needle today may be more than ten degrees different from yesterday's magnetic north, and what was measured yesterday is different from the day before yesterday. , and there is a deviation. Therefore, the deviation angle between true north and magnetic north cannot be determined correctly. The direction of magnetic north and the angle of deviation from true north vary from region to region. According to the declination angle of magnetic north, the true north position is to move in the opposite direction of the declination direction. For example, if the magnetic north in Taipei is west and the declination angle is 4 degrees, then moving the magnetic north 4 degrees eastward will be the true north position. North position. After measuring the true north position, use it as a basis to determine other east, west, and south directions.