Who is the founder of the compass?

When it comes to compasses, everyone knows. When it comes to the earliest compass, few people say it. The earliest compass was related to the Yellow Emperor. It is said that four thousand years ago, the Yellow Emperor was the leader of the Zhuolu tribe. He has a close relative, Emperor Yan. At the same time, there is also a leader of Jiuli nationality-Chiyou. Chiyou is a combative man, with an iron eater (panda) on his leg and eighty-one brothers, who are extremely fierce. Chiyou defeated Yandi, who refused to give up and turned to Huangdi for help. The Yellow Emperor led six clans to fight against Zhuolu against Chiyou. It is said that Chiyou couldn't resist at that time, so he created a fog with witchcraft, which made the soldiers of the Yellow Emperor lose their way. Therefore, Nan Dao made a contribution. With the southern guide, the Yellow Emperor found the direction, pursued the victory and killed Chiyou. In this way, the yellow emperor, the ancestor of the later Chinese people, was born, and we also called ourselves descendants of the Chinese people. Of course, this is just an ancient legend, and the invention of the real compass is a long process. The compass of the Yellow Emperor, Sina of the Warring States, the magnetic spoon of the Han Dynasty, the iron fish of the Tang Dynasty, the floating magnetic needle and the tadpole pointer were finally named as the founders of the three-needle surveying and mapping in the Kaiyuan period of the Tang Dynasty. The compass came from this and later spread to the west, which played an inestimable role in human development.