Four-foot full paper refers to four-foot rice paper, and the finished product of "four-foot horizontal cutting" is "Doufang", which is 69 cm long and 69 cm wide. The finished product of "four-foot vertical cutting" is a "four-foot single strip" with a length of 138 cm and a width of 34.5 cm.
Xuan paper is soft and smooth, with faint bamboo curtain lines, neat and clean trim, and there are no defects such as wrinkles, cracks, holes, sand particles and attachments that affect the use of paper. The colors of the same batch of products shall be consistent, and the difference in brightness (whiteness) shall not be greater than 3% (absolute value).
The concept of four feet
The concept of four feet mainly appears in the specifications of calligraphy paper, which means four square feet. The complete four-foot rice paper is also called four-foot rice paper, and the specification is 69* 138 cm. However, due to various factors, four-foot rice paper is rarely sold directly.
The rice paper derived from four-foot whole rice paper mainly includes four-foot horizontal batch, four-foot single joint, four-foot square bucket, four-foot three-slit, four-foot six-slit and four-foot eight-slit, and the specifications are 138*69, 138*34, 138*34 and 69 * respectively.