Preparation materials: a blue (whatever color you like) square paper.

1. Fold in half once along the diagonal of the square, and fold both sides inward with reference to the diagonal.

2. After folding inward, the remaining small triangle is folded backwards.

3. It looks like this after folding. Open it again.

4. Fold inward as shown in the figure, overlapping with the corner point in the lower left corner of the vertex triangle.

5. Fold the adjacent edge on the left again, which also overlaps with the point in the lower right corner of the triangle in the upper right corner.

6. Fold the previous step before opening it all.

7. Press the creases and corners of the just folded two steps into such a small square.

8. Conversely, fold both sides of the small square inward with the diagonal as the center.

9. Then open all the newly folded ones in turn.

10. Fold inward according to the crease just folded, as shown in the figure.

1 1, then fold the corner at the other end inward and press the excess part in.

12, it looks like this after folding. If you look carefully, you can't make a mistake.

13, the next step is to break the head of Tyrannosaurus rex, and the small square is folded inward with the diagonal as the center.

14. Press the folded crease into this shape.

15, the other end is also folded inward with the diagonal as the center, and then folded inward, and each side is treated as above. It looks like this after folding.

16. Fold the middle corner up and then down, flush with the corner of the small triangle.

17, this step is crucial. Pull the horn to the top of Tyrannosaurus Rex's head like little wings, and then fold the extra part inward.

18, both sides are treated like this, and it is like this after folding.

19. Fold the previous step and fold it in half.

20. Fold the triangle near the head outward, which looks like little wings, but it is actually the forelimb of Tyrannosaurus Rex.

2 1. Fold the hind legs of Tyrannosaurus rex towards the forelimbs, as shown in the figure.

22. Then fold out the head of Tyrannosaurus Rex, similar to the head folding method of a paper crane, and then dig out its mouth.

23. Then fold its forelimb, fold it and press it in according to the crease. Things under the mouth of Tyrannosaurus rex should also be folded and pinched by hand, so that the whole look is more vivid.

24, folded as in the picture, pressed in according to the crease.

25. The following is the folded tail of Tyrannosaurus Rex, as shown in the figure.

26. Then fold the forelimbs of Tyrannosaurus Rex and fold them outward.

27. Fold inward according to the folded crease, as shown in the figure.

28. Fold the small feet of Tyrannosaurus Rex according to the shape of the fold, and flatten the small corners to look better.

29. Finally, deal with the tail of Tyrannosaurus Rex, and fold the edge of the place where the tail has just been folded, so that Tyrannosaurus Rex can stand up steadily. There are two ways to treat the tail a little and see which one looks better.