A piece of 15*15cm colored paper, folded in half as shown.
Fold the four triangles toward the middle as shown.
Fold it into three equal parts horizontally and vertically as shown.
Expand the triangles on both sides and fold them as shown in the picture.
Fold the other side in and the square box is ready.
A piece of 7.5*7.5cm colored paper, folded in half as shown.
Fold the top and bottom sides toward the middle.
Unfold the top piece, turn it to the back, and fold the two corners upward.
Turn over to the other side and fold the triangle upward as shown.
Turn over to the other side and fold in half as shown.
Fold the two small triangles downwards as shown in the picture, and fold them in half as shown below.
Put the heart into the square box, and the heart square storage box is ready.
