1: First take a couplet paper and fold it in half. This is done so that the width of both sides is the same when folding to avoid different sizes. Then, fold the paper in half from top to bottom to form a two-word grid, as shown below.

2. Then fold it up and down to form a four-character grid, as shown below.

3: Then fold it up and down to form a figure of eight, as shown below.

4. Fold the 8-grid paper in half on both sides of the diagonal without opening it. The folded effect is as shown below.

5. Fold the folded paper in half and open it to form seven rhombic grids, leaving a little space up and down. When writing couplets, write the words in the rhombic lattice, with the horizontal line in the middle of the rhombic lattice as the center line, which is exactly 7 equal parts, as shown below.

After folding, divide the paper in half and you can write.