There are five feet, six feet and two feet of rice paper, generally taking "feet" as the unit. The "foot" in calligraphy and painting paper is slightly different from what people say now, which refers to the size of Lu Banchi invented by Lu Ban, an ancient carpenter in China.
Xuan paper is a high-grade paper for painting and calligraphy, one of Four Treasures of the Study, China, a specialty of Anhui Province and a national geographical indication product. Xuan paper has the characteristics of good ink wetting, aging resistance, difficult discoloration and soft paper, which is convenient for long-term preservation of calligraphy and painting. Xuan paper is also called "the king of paper" and "the paper with a thousand years' life" because of its complicated production procedures and technology and relatively expensive price.
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The raw materials of rice paper are green sandalwood, straw and other agricultural products. Xuan paper is divided into base paper and processed paper according to processing methods, and raw Xuan paper, semi-cooked Xuan paper and cooked Xuan paper according to the inking degree of paper.
Cooked rice paper is a kind of processed rice paper that uses special reprocessing technology to form more varieties of colors, which are mainly divided into wax Xuan, alum Xuan, color Xuan, color alum Xuan and so on 100. The promotion of calligraphy and freehand brushwork, and the promotion of meticulous painting. According to the proportion of raw materials, it is divided into three categories: cotton material, cleansing skin and special cleansing skin. Specifications are four feet, five feet, six feet, seven feet gold list, eight feet screen, eight feet, two feet, six feet; According to the Silk Road, there are single silk road, double silk road, rib and turtle pattern. Xuan paper products include plain white picture books, printed music, stationery and antique couplets.