Traditional rice paper is usually called by its length, such as three feet and four feet. , its length-width ratio is 2: 1. For example, "three feet" rice paper is three feet long and 1.5 feet wide; "Four feet" rice paper is four feet long and two feet wide; "Six feet" rice paper is six feet long and three feet wide, and so on. Doufang refers to folding the long side of rice paper in half and cutting it from the middle. Because the length-width ratio is 2: 1, the long side is cut in half to become a square, so it is called "dou Fang". The length of the long side of four-foot rice paper is four feet, and the width is equal to two feet after being cut in half, so the square of four feet is 2×2 feet. By analogy, the three-foot bucket is 1.5× 1.5 feet, and the six-foot bucket is 3×3 feet. ...
Converted into centimeters is
Four-legged fully open: 138 x 69 Four-legged single open: 138 x 34
Four-foot horizontal batch: 138 x 69 Four-foot couplet: 138 x 34
Four-foot barrel: 69 x 68 Four-foot three-opening: 69 x 46
Four feet and four openings: 69 x 34 Four feet and six openings: 46 x 34
Four feet eight inches: 35 x 34