Second, open one side first and fold it at the center line.

Third, the other side is the same. After folding,

4. Fold in half along this red center line.

5. Fold the other side in half,

Six, the left and right sides are aligned with the center line and folded in half, and the other side is the same.

7. Fold the lower part of the triangle, and then fold it.

Eight, open the corners of the four ends in turn and fold them in, which is more firm.

Nine, you can open it after folding.

other

Fold the long side of A4 paper in half, cut it in half, half for folding the box body and half for folding the box cover.

Point the long side of the rectangle at yourself. If there is a painted face, there is a painted face down. Fold the rectangle up and down, leaving a long center line.

Fold the top edge to the center line and open the line 1/4. Then align the lower right corner with the upper side, press out the upper half of the bisector in the upper right corner, open it, and you can see the intersection of the bisector and the center line. After the intersection, the right half will fold to the left.

Align the upper right corner with the line 1/4, fold the lower right corner with the line 1/4, and open it.

Fold down the top 1/4, and pull the upper edge crease of the small rectangle to the right to get this figure.

Fold the middle long part of the small rectangle upward, align the lower oblique crease with the center line and flatten it.

Keep the lower crease, pull out the right angle under the edge of the upper half, flatten it, then press the raised part in the middle under the strip and turn the strip down to the back.

Turn one side, align the right side of the rectangle with the left crease, align the lower right corner with the midline crease, fold the right half to the left along the vertical edge of the folding triangle, leave a crease, and open it to make the left and right sides form a rectangular part.