It refers to cutting a four-foot whole rice paper (about 138 * 68 cm in length and width) vertically into two pieces, and the length and width of one piece is 138*34. If you sell calligraphy and painting, it means one, not two.
If you write vertically, the effect is a banner. Just write a famous saying, a poem, etc. Or you can write a few big characters like the banner below and sign on the left.
If it's a banner, write four or five big characters and sign it. Four-foot-wide banner paper is not suitable for writing too many words, so it looks good. I suggest you write "Heaven rewards diligence", "Respect teachers and attach importance to teaching", "Stay at a distance" and "Respect morality and carry things". According to China's calligraphy format, from right to left, left and vertical, from top to bottom. Then the bucket is cut in half horizontally.