If you think of the earth as a big magnet, the geomagnetic north pole of the earth is the guiding pole, and the geomagnetic south pole refers to the north pole. Between magnets, magnetic poles with the same name repel each other and magnetic poles with different names attract each other. So the compass repels the south pole, the north arrow repels the north pole, and the compass attracts the north arrow.
Classification: Magnets can be divided into "permanent magnets" and "non-permanent magnets". Permanent magnets can be natural products, also known as natural magnets, or artificial. Non-permanent magnets, such as electromagnets, are magnetic only under certain conditions.
Magnets are not invented by people, but natural magnetite. The ancient Greeks and China discovered that there was a naturally magnetized stone in nature, called a "magnet". This kind of stone can magically pick up a small piece of iron and swing it at will and always point in the same direction.
Early navigators used this magnet as their earliest compass to tell directions at sea. China was the first to discover and use magnets, that is, making a compass with magnets is one of the four great inventions in China.