when did silk begin to be produced in china
History of silk The earliest evidence of silk was found at the sites of Yangshao culture in Xia County, Shanxi, where a silk cocoon was found cut in half by a sharp knife, dating back to between 4000 and 3000 BC. The species was identified as Bombyx mori, the domesticated silkworm. Fragments of primitive loom can also be seen from the sites of Hemmed culture in Yuyao, Zhejiang, dated to about 4000 BC. The earliest example of silk fabric is from 3630 BC, and was used as wrapping for the body of a child. The fabric comes from a Yangshao site in Qingtaicun at Rongyang, Henan.[1] Scraps of silk were found in a Liangzhu culture site at Qianshanyang in Huzhou, Zhejiang, dating back to 2700 BC.[2][3] Other fragments have been recovered from royal tombs in the Shang Dynasty (c. 1600 â€“ c. 1046 BCE).[4]
History of paper Paper spread to India in the 7th century.[16][25] However, the use of paper was not widespread there until the 12th century.[26]
Industrial espionage Economic and industrial espionage has a long history. The work of Father Francois Xavier d'Entrecolles in Jingdezhen, China to reveal to Europe the manufacturing methods of Chinese porcelain in 1712 is sometimes considered an early case of industrial espionage.[28]
Mint (facility) At about the same time, coins and mints appeared independently in China and spread to Korea and Japan. The manufacture of coins in the Roman Empire, dating from about the 4th century BC, significantly influenced later development of coin minting in Europe.