The kind of paper was also called eternal red.In the Han and Wei Dynasties, people used corktree to dye paper yellow, improve the performance of paper, increase beauty of paper and prevent moth eaten.

 
  • 漢魏時(shí)期已使用黃蘗汁染紙,黃蘗汁能將紙染成黃色,既改善紙的性能,增加紙的美觀(guān)度,還能起到防蟲(chóng)蛀的作用。
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