Gyroscope is the earliest entertainment tool of Han people, also known as sudra, which is called "Gan Le" in Minnan and "ice drift" or "beating an old cow" in the north. Wuqiao area in Hebei Province is called Bo. The upper half of the shape is round and the lower half is pointed. It used to be made of wood, but now it is mostly made of plastic or iron. When you play, you can wrap it with a rope and pull it hard to make it rotate upright. Or rotated by the elastic force of a spring. The traditional ancient gyro is roughly an inverted cone made of wood or iron, and the game is split with a whip. Or launch with a transmitter. In modern times, the fighting gyro of Hurricane spirit of war appeared, and it was the king of fighting. Of course, there are also some "hand-twisted gyros" that are very popular. Gyroscope is a toy that teenagers are very familiar with. Popular all over the world. China is the hometown of gyro. A stone gyro was unearthed in the Neolithic site in Xia County, Shanxi Province, China. It can be seen that gyroscopes have a history of at least four or five thousand years in China. Divided into combat gyro and fitness gyro.