The longitudinal length after folding, and then folding [that is, dividing the paper into two longitudinal parts, because we have to divide the two longitudinal folding parts into 2.5 folds, and this part should be prepared].
Then, fold the finished product in half vertically and cut off a part [leaving a certain distance].
Then, divide the part except the edge into two halves.
In this way, except for the title, edge, etc., the remaining ten words are divided into two columns.