First, fold two round colored papers in half, and then fold them in half. Then use scissors to cut along the crease. Then stick the cut colored paper on the surface of the circular cardboard with a glue stick, and stick the colored paper on the other side. After that, the stick can pass through the center of the circular cardboard.

A gyro is a rigid body that rotates at high speed around a fulcrum. Gyro is one of the earliest folk entertainment tools in China, also known as sudra. It is called "Gan Le" in Minnan dialect and "Jia" or "Beating an old cow" in the north. Wuqiao area in Hebei Province is called Bo. Guizhou and other places are called géluō not not. Puyang, Henan is called Delou, and Jiaozuo dialect is called Pi Laojian.