This is a mini UFO toy made using the principle of aerodynamics. When operated, it looks like there is an invisible traction line in the hand, or a magnetic force that continuously changes its trajectory, but it does not. Flying away randomly, there are some descriptions of this toy on Youku. There are also some videos of UFO toys posted by foreign websites like YouTube about players participating in competitions. They are all very interesting. After the player controlling it rotates the UFO toy, he must Reaching a rotational speed, using the changes in hand shape and palm to fan the air around the UFO toy, so that the UFO toy does many incredible actions, which is indeed very magical. Multi-purpose helicopters and other multi-purpose rotors rise and fall. Airplanes all use the principle of aerodynamics, but the power of the UFO toy unit comes from the rotational force you give it at the beginning. When it reaches a certain speed, the air inside the UFO toy uses 8 blades close to the center of the UFO toy to continuously rotate the UFO toy. The air in the center tends to be discharged at a constant rate, so the UFO toy can keep rotating, hovering, and making irregular movements in the air for a short period of time. However, it has no other continuous source of power after flying, so it cannot flip over. , but foreign masters also flip it over and fly it normally, and it must be given external force conditions of the wind to make it fly. Even though it is a small toy, it has gathered a lot of principles of mechanics and aerodynamics. I hope it can help you!