Paper，zhi，was a Chinese invention.2，000 years ago，Chinese people

（1）i　 　 papermaking.This zhi was made （2）o　silk and was very expensive.Only the emperor and rich people could （3）a　　 to use it.1，900 years ago，Cai Lun improved the paper﹣making process.He made cheap jinzhi out of tree bark and old cloth.The improvement in paper﹣making spread zhi far and wide，and many different （4）k　　of zhi were made by Chinese people.Xuan paper，a type of high quality rice paper，best shows the charm of

（5）t　　 Chinese painting and calligraphy （书法）.Later，Chinese zhi spread to the West via the Chinese Silk Road.