Prepare a square piece of paper.

Fold the center line and diagonal line.

Align both sides with the center line and fold.

The other two sides are also aligned with the center line, folded and unfolded.

Pinch the four corners of the square.

flatten out

Press out two triangular creases.

Fold the four corners as shown.

Turn to the back, fold the upper and lower sides to prepare the center line, and only fold the line segments marked in the figure.

Turn to the back and press the center point with your finger.

Open the right side and fold the inner layer to the left according to the existing crease.

Flatten and fold the other side in the same way.

Fold in half along the center line and tidy your wings.

Fold down along the line.

Fold three bisectors and intersect at one point.

Pick it up as shown.

Align the intersection of the small angle and the bisector of the angle and fold it.

Fold the crease at the bisector of the corner and hold the lower end of the butterfly wing.

The other side is folded in the same way, and the beautiful butterfly is obtained after plastic surgery.