Preparation material: square colored paper.

1. Take out two square colored papers and fold a piece of paper in half.

2. Open it and fold it in half along the middle crease.

3. The second piece of paper is the same method, as shown in the figure after folding.

4. Fold the upper right corner of the yellow paper down and the lower left corner up. Then fold the upper left corner of the red paper down and the lower right corner up.

5. Fold the upper end of the red paper down with one side of the big triangle as the center line.

6. Fold the lower end upwards to form two triangles, and treat the yellow paper as well.

7. As shown in the figure, put red paper and yellow paper in the middle.

8. Fold the lower end of the yellow paper upward and insert it into the red paper. Do the same for the upper end. Turn the paper over, insert the right end of the red paper into the yellow paper on the left, and do the same for the left end.

9. Clean up the edges and a beautiful paper dart will be folded.