1. First, we find a rectangular piece of paper.

Fold one short edge toward the other short edge, but do not align it. Just leave one edge, usually 1/3 of half of the paper is enough.

2. After that, we will fold the opening edge of the upper layer of shorter paper toward the opposite edge, but do not align it with the opposite edge, and let half of the upper layer of paper come out.

3. Then fold the paper below in the same direction, aligning the edge with the edge of the bottom paper.

4. After that, we can see that the paper is wider on one side and narrower on the other. We will fold the corners of the wide side to the inner line.

5. Then align and fold the narrow corner on the left side toward the inner line.

6. Then fold the narrow side in half along the inner line toward the wide side.

7. Finally, we stand the big end of the origami paper up, open the top with our fingers, hold the two ends and press down to reveal the shape of the ingot, and we can quickly fold the ingot out. .