Classification
Due to different producing methods, Xuan paper can be classified into Shengxuan, Shuxuan, and Banshuxuan. Shengxuan (literally "Raw Xuan"), which is not specially processed, excels in its ability to absorb water, causing the ink on it to blur. Shuxuan (literally "Ripe Xuan"), however, is smeared on by Potassium alum during its production, which results in its texture being harder and its ability to absorb water weaker. This feature makes Shuxuan more suitable for Gongbi rather than Xieyi, and more easily torn at the same time. Banshuxuan (literally "Half-ripe Xuan") has intermediate absorbability, between Shengxuan and Shuxuan.
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