Silk products of China are popular worldwide and are known for their diverse colors and variety. Yun Brocade was developed during the Yuan Dynasty although its origin could date back to the Southern Dynasty. Historical records suggest that prior to the Southern Dynasty there was no brocade in Nanjing until Emperor Liu Yu (363-422) had workers move to Jiankang (today's Nanjing) and established production there. Yun Brocade features quality material, refined weaving and the wide use of gold and silver threads. This magnificence gained the name of Yun, which is Chinese for 'cloud'. Elegant Yun Brocade ultimately became a precious artwork and no longer a fabric for day to day wear. In the Yuan, Ming and Qing Dynasties Yun Brocade was a royal tribute.As the unique weaving skill cannot be undertaken by modern machinery, Yun Brocade remains very expensive.[China.org.cn]