1. First take out a piece of paper, fold the diagonal in half, and then fold the opposite side of the square in half to form a three-dimensional four-pointed star.

2. Then make the same five four-pointed stars.

3. Cross the diagonal corners to make them overlap each other, and insert the corners into the corresponding other side.

4. Similarly, insert one corner of a four-pointed star of another color into the remaining corners.

5. Insert the diagonals of six four-corner stars into the diagonals of other corresponding four-corner stars,

6. Fold the gyro with your mouth and blow, and the gyro can rotate.