1. Fold a square paper for origami diagonally on both sides, which means you can pick it up like a diamond, fold it diagonally, turn it 90 degrees, fold it diagonally, fold it diagonally again, fold it diagonally again, and then open it again, so that two criss-crossing creases will appear on the paper.

2. Fold the tips of the upper and lower ends to the middle to form a clear crease. At this joint, the upper and lower ends are two tips with opposite directions. No matter which side of the paper you put down, you can see the effect now. Then, turn the paper over.

3. Fold the flat edge to the middle. What you see now is under the paper. You have folded two endpoints, so you can see a shape with two horizontal sides and the other two are sharp corners. Fold the horizontal downward side to the middle. The upward side should stand out.

4. Fold the two endpoints of the middle diamond to the middle. The shape you see now should be very similar to a fingertip-two small colored triangles on both sides.

5. The face will be half as long as the original shape, and then open it.

6. Fold one end to two opposite diamond-shaped inward edges, and the edges below the paper on both sides should form a diamond. Between these two ends, there are a series of triangles. Turn the sides of the triangle inward, and then fold the diamond at one end in half to align with the diamond at the other end.

7. Fold the outer end of the inward diamond to the middle. This belt now has four diamonds. Count from the left and fold the right end of the third diamond to the middle. Keep the end point in the middle position and fold the belt back on itself. This will form two creases close to each other. Do the same for the leftmost diamond.

8. Put the sword across in front of you. Fold the bottom edge to the middle, and then open it (you need this crease later). Then, turn the sword around and do the same for the other side.

9. Fold the handle by squeezing. Let the four small triangles face you. Fold the vertex of the leftmost triangle to the middle, then open the triangle and flatten it so that there is a smaller angle on the right.

10, squeeze and fold again. Next to the triangle just folded, there is another triangle, which now looks intact. Its good days are over. Fold the triangle in the same way and fold the tip to the middle. Open it and flatten it, so that the width of the sword is halved. Do the same for the other side. So the whole hilt is finished.