Fold the red paper in half four times, but the opening direction must be on the right hand side, then draw rectangles of different sizes on it, and draw three rectangles on the right side. The first thing to note is The rectangle is a little wider than the others. The effect of cutting is better this way. The fourth rectangle must be drawn on the left, its width being the largest, then continue drawing two rectangles on the right, and finally a smaller rectangle on the left. If the text description is not clear, you can look at the diagram. The white part is the part that needs to be cut off. Use scissors to cut off the white part. This will be the simplest double happiness after unfolding.