How to fold the southeast and northwest?

This is how I fold the southeast, northwest, prepare a square piece of paper, fold the paper into two rectangles, then fold the two rectangles in half, draw four directions of southeast, northwest and northwest on the square paper, cut the four directions of southeast, northwest and northwest along the drawn lines with scissors, and spread them out. This simple origami work can be used to play some traditional games, and it can also be used to make some interesting toys and decorations.