阅读下面短文,在空白处填入1个适当的单词或括号内单词的正确形式。
The term Xuan paper first appeared in On Famous Paintings through the Ages, 1. book written by Tang Dynasty artist Zhang Yanyuan, in 2. he described Xuan paper as an ideal carrier for calligraphy and painting. Handma de Xuan paper from Jingxian county, East China’s Anhui province, was listed as a tribute(贡品) to the royal court for its best quality during the period.
3.(make) Xuan paper is 4.(extreme) strict. Sandalwood bark, a plant native to southern China, goes through 108 5.(procedure) together with rice straw over the course of three years before it can transform into fine Xuan paper. The entire procedure is so complicated that even the most skilled man can only learn 6.(master) limited number of steps.
Xuan paper has accompanied(陪伴) the Chinese artists 7. thousands of years. Unlike other forms of paper, it is very resistant to damage 8.(bring) by time. It is this durability(耐用性) that has saved many 9.(value) works from ancient China.
Papermaking 10.(be) a result of wisdom of the ancient Chinese, and Xuan paper is the highest point of papermaking.