1. First, take a square piece of paper, fold it in half along the diagonal once, and fold a corner with two openings down to form an equilateral triangle.

2. Secondly, fold the right side to the left along the dotted line, then fold it to the right along the dotted line, turn it over twice, and then fold it down and up according to the folding width.

3. Finally, take the lower right corner as the point, fold the bottom edge into a triangle, and then fold the top surface.