Cooked Xuan is coated with alum when it is processed, so the paper is harder than raw Xuan, and its water absorption capacity is weak, and the ink color will not spread when it is used. Therefore, the characteristics make cooked propaganda suitable for meticulous painting rather than ink freehand painting. Its disadvantage is that it will appear "alum leakage" or brittle crack when stored for a long time. Cooked Xuan can be reprocessed. Coral, mica paper, cold gold, wine gold, glutinous golden flower tendon and peach tiger skin are all reprocessed colored papers.
Health promotion is highly absorbent. When writing with light ink, the ink easily penetrates and melts. It is relatively easy to write in thick ink. Therefore, when creating calligraphy and painting, you need to master the shade of ink to be handy. Health categories include Jiagong, Jade Edition, Jiege, Shan Cuo, Lian Mian and so on.
Semi-cooked Xuan is also processed from raw Xuan, and its water absorption capacity is between the first two. Yu Ban Xuan belongs to this category.
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