Compass which dynasty invented the compass?

1. At present, the traditional view is that the ancestor of the compass appeared in the Warring States period. It is made of natural magnets. It looks like a spoon with a round bottom. It can be balanced on a smooth "field" and can rotate freely. When it is at rest, the handle of the spoon will point to the south. At that time, in the book "Everything is wrong", there was: "Wang Li Sina grabbed the sky first." "Sooner or later" means square, east.

2. According to ancient mine records, it first appeared in the Cishan area during the Warring States period. The predecessor of compass is Sina, one of the four great inventions in ancient China.

According to Guangming Daily 1982 in March, Cishan (in present-day Wu 'an, Handan City, Hebei Province) is the birthplace of the compass, one of the four great inventions in China. According to ancient mine records, Geography of Ming Dynasty said: "There is a magnetic mountain in the southwest of Wu 'an County, Cizhou, which produces magnetite. "The Ming Yi Award also said:" There is a magnetic mountain in the southwest of Wu 'an County, Cizhou, which produces magnetite. " "Ancient Mine Records" also records the theory of "Ming Yi Governance": Cishan, 30 miles southwest of the county seat, is a primary mine, hence the name Zhou. Cishan, the hometown of compass.