As for how this kind of paper was produced, there is also a legendary story. It is said that Cai Lun's disciple Kong Dan's family was born in papermaking, and he himself inherited the family business. On an accidental trip, he saw a sandalwood tree lying by a stream. Its bark was soaked and rotted for years, so he had a brainwave and chose sandalwood bark as raw material for papermaking. This is the origin of Xuan paper, which is called Xuan paper because it is produced in Xuancheng. Xuan paper can be divided into raw Xuan, cooked Xuan and semi-cooked Xuan.
Raw Xuan has strong water absorption, and cooked Xuan is not easy to absorb water, because rice paper contains alum, while semi-cooked Xuan can absorb water, but it is not easy to penetrate. If ordinary scholars write in lowercase letters, they use the familiar Xuan pen, and cursive script uses the raw Xuan pen. Xuan paper spread to the Southern Song Dynasty and was used as Cheng Xin Tang paper by Li Yu, the queen of Southern Tang Dynasty. Later, it spread to the Song Dynasty. Ouyang Xiu once got it and gave two axes to Mei Yu Sheng. Gong Liu's father once wrote a poem: "At that time, one piece sold for 100 gold, and there were thousands of axes in Cheng Xin Hall. It can be seen that people love rice paper. It is said that this kind of paper is "skin like an egg membrane and as clean as jade".
Later generations smell this and that, making them ignorant. "China people, especially China literati, often have a special feeling for paper. This kind of emotion sometimes even goes beyond the general sense of "love" and "like", and it contains too many ambiguous feelings, meanings, tastes and feelings. ?