Do you know where the compass first originated?

Compass, also known as "compass", is one of China's unique academics in ancient and modern times, and it is a tool used by scholars in the past dynasties to inspect Yin and Yang houses. South-pointing South Locomotive originated from Xuanyuan Huangdi Zhanchiyou. Now it is known that the guided vehicle has a gear system that can be adjusted automatically. When the car moves and turns, the direction indicator still points in the original direction. This has nothing to do with the direction of the magnetic pole, so the compass is not a compass. In order to meet the needs of professional activities, ancient geomantic omen's long-term exploration of "discrimination and positioning" directly led to the invention and application of compass and the discovery of magnetic declination (the angle between geomagnetic meridian and geographical meridian), which made a very important contribution in human history.