Know how to origami.

The overlapping method of cicadas is as follows:

1. First, we prepare a square piece of paper and put it on the desktop.

2. Then fold the pair into a triangle.

3. Turn a few more times, and take the middle vertical line of the triangle as the benchmark, and fold the two corners in half, as shown in the figure.

4. As shown in the figure, take the crease as the common line and fold both sides in the direction of the arrow.

5. Fold a small triangle on the upper paper first, and then fold it in the direction of the arrow according to the crease, as shown in the figure.

6. Fold surface A as shown.

7. As shown in the figure, put the A side into the seam between the upper and lower layers of paper.

8. Then turn it over, and turn the extra part to the back as shown in the figure.

9. Fold the left and right parts of the paper back with creases in the direction of the arrow.

10. Finally, you can draw eyes.

Cicada is a representative species of cicada. The male's abdomen has a sound generator, which can constantly make sharp sounds. The female doesn't make a sound, but she has a hearing device in her abdomen. Larvae live in the soil, suck the roots of plants, and adults eat the juice of plants. Cicada is an incomplete metamorphosis, from egg to nymph, after molting several times, it becomes an adult without pupa.

In recent years, the phenomenon of catching golden cicadas in restaurants in Shandong, Shanxi, Henan, Hebei and Anhui is very serious. Because the golden cicada larvae live underground for about 5- 12 years before they can break out of the ground, the number of golden cicadas has dropped sharply because of such crazy capture. In some areas, the voice of the golden cicada can no longer be heard in summer, and the golden cicada is facing a crisis of survival and may even become extinct.