How to fold a picture of a paper folding boat

Fold two pairs of corresponding corners of a square piece of paper in half and unfold them to get the central point crease of the square piece of paper. Fold all four corners of the square to the middle. Fold four corners, then unfold them to get four creases. As shown in the figure, the four corners are folded inward twice in a row, and finally the shape shown in the figure above is formed. Fold in half. Fold in the direction shown by the arrow in the above figure, and the lower side is also folded.

We can see that there are four small right-angled triangles on this picture, and then fold these four small triangle rows forward along their hypotenuse. According to the steps in the above picture, fold the shaded part marked by the black pen up and to both sides, pick up the origami, open the upper part, turn the two edges outward in the direction of the arrow, and turn out all the inside at the same time.