The historical function of the invention of compass automobile

In ancient times, the Yellow Emperor fought against Chiyou and was trapped by the poisonous fog sprayed by the eighty-one strange Chiyou. But because of the invention of the compass, it is still of positive significance to get out of the predicament. After that, the compass was improved to Sina, disk, compass and so on. It has become one of the four great inventions in China. Introduced to the west, it promoted the opening of new routes and made the eastern navigation technology lead the world.