If it is square (approximate square), it will become 9 rows after 20% discount; The vertical folding of 10 becomes 1 1 column. From right to left, from top to bottom, write four words in a column, blank lines, blank columns, blank lines up and down, left and right blank columns, just right; There is one column left in the second column on the left, with signature, author's name and author's name. If the paragraph is long, leave a column, that is, 12 vertically folded, that is, 13 lines. Wish you success!
If it is a long strip, it is necessary to calculate how many times to fold horizontally and vertically according to the size of the paper according to the method taught above. In short, write a space, a space, a space, and at the same time, keep it up, down, left and right, and remember the location of the space signature.