What's the difference between cardboard and rice paper?

Cardboard is a kind of cardboard, just like a4. Only three or five, that thick. Xuan paper is divided into raw Xuan and cooked Xuan. Paper is soft and absorbent, and is used for painting and calligraphy. If you are more sophisticated, you can write some on rice paper. Ink culture, and then framed with cardboard.

Xuan paper:

Xuan paper is a traditional paper for painting and calligraphy in China, and it is also one of the traditional papermaking processes in China. Xuan paper "began in the Tang Dynasty and was produced in Jingxian County". Since the Tang Dynasty, Jingxian County was under the jurisdiction of Xuanzhou, and it was named Xuan Paper because of its land. It has a history of 1500 years. In 2002, Jingxian County, Xuancheng, Anhui Province was identified as the origin of rice paper by the state.