How to fold the mountain city?

The steps of folding the mountain city are as follows:

1. Prepare a piece of A4 paper.

2. Fold A4 paper in half along the horizontal centerline.

Fold this paper into three equal parts.

4. Cut off the blade of the mountain city.

5. Wrap the handle with green paper.

6. Put an oval object on the handle of the mountain city.

7. Make a sheath according to the size of the mountain city.