1. Fold the square red paper in half and fold it into creases for reference in the following steps.

2. Next, fold a corner into an inverted triangle along the crease.

3. Then fold it and fold the triangle in the second step.

4. Fold down the folded parts in step 3 together, paying attention to keeping the folding lines aligned all the time.

5. Select adjacent edges and fold a big triangle along the bisector.

6. The opposite side is also folded into a big triangle. Note that the two folded parts should be equal in size.

7. Turn the rest over and fold it into an inverted triangle.

8. Turn it back and fold the two corners towards the center line.

9. Press the two sides separately to fold out the effect.

10. Fold the lower part, buckle the folded pattern with the upper hem, and a beautiful love shape will come out.

After folding according to the above steps, the wedding red envelope will be folded.