How to fold the pen container

The steps of folding the pen container are as follows:

1. Prepare a thick square piece of paper, the size is preferably above 17 cm, and fold it diagonally to make a cross crease.

2. Divide the opposite sides into four equal parts and fold them in half. Fold the four sides along the crease and unfold.

3. Fold the paper into a big triangle along the diagonal, fold the lower two corners into a triangle obliquely upward along the crease, then fold the paper into a big triangle along another diagonal, and fold the lower two corners obliquely upward along the crease into a triangle.

4. Finally, support the four sides along the crease and fold it into a cuboid.

The detailed introduction of origami is as follows:

Origami is an artistic activity of folding paper into various shapes. Origami is not limited to the use of paper. While adhering to the folding standard, origami lovers all over the world use various materials, such as tin foil paper, napkins, acetic acid tablets and so on.

Origami originated in China in 1 or 2nd century, and was introduced to Japan in 6th century, and then spread to the whole world through Japan. It is also said that origami originated in Japan and Spain.

The combination of origami and natural science has not only become an auxiliary teaching tool in architectural schools, but also developed origami geometry as a branch of modern geometry. Origami is not only a toy, but also a thinking activity, a symbol of peace and commemoration, and a pastime.