The method is as follows:

Material preparation: square cardboard, gift ribbon, scissors, scratch pen.

1. First, use a scratch pen to lightly scratch a mark in the middle of each side of the square.

2. Then use a scratching pen to draw a square in the middle of the red cardboard.

3. Mark a point on the four vertices of the square cardboard, and connect the point of the square cardboard to the four vertices of the square in the middle.

4. Use scissors to cut out the graphic into an arc.

5. Punch a hole in the four corners of the cut shape.

6. Then fold the curved edge inward, and fold it firmly to make a crease.

7. Then, prepare the flower ribbon. Thread gift ribbon through each hole.

8. Finally, tie it tightly and it will be the mooncake box.