Seven character quatrains. 100 times 55 is three feet of rice paper. The size of rice paper is calculated using feet, and there are types such as 2 feet, 3 feet, 4 feet, 6 feet, 8 feet, etc. Among them, the size of 3 feet is 1.00 meters times 0.55 meters when spread horizontally, and the size of three feet vertically is 1.00 times With a length of 0.275 meters, the seven-character quatrain has two types: 28 characters and 56 characters. According to the number of characters, it is more appropriate to write it on three feet of rice paper that is divided vertically. It is very suitable in terms of font size, typesetting structure and layout.