Cultural relics are important cultural heritages left during the social activities of human beings. In the 5000-year history, a huge amount of cultural relics, such as bronze ware, porcelain, lacquer ware, jade ware, gold and silver ware, etc have been handed down in China. The exquisitely-made articles are not only the embodiment of the development of science and culture in ancient China, but artistic treasures of high appreciation value as well.