瓷器是用粘土、长石、石英混合烧成的陶器,乃我国古代重大发明之一,夏商时代已有原始素烧瓷(即白陶),到西周晚期,原始瓷的发展迅猛。但是由于当时自然和社会各种因素的制约,各地的原始瓷发展很不平衡,并且大多没能直接演变为成熟青瓷,惟独浙江上虞例外。西周时期,上虞一带的原始瓷生产已形成一定规模,产品主要分青釉和黑釉两类。到春秋战 Porcelain is made of clay, feldspar and quartz mixed with pottery. It was one of the major inventions in ancient China. There was already primitive porcelain (ie white porcelain) in the Xia and Shang dynasties. By the late Western Zhou Dynasty, the primitive porcelain was developing rapidly. However, due to the constraints of various natural and social factors at that time, the development of primitive porcelains across the country was unbalanced, and most of them failed to directly evolve into mature celadon, except in Shangyu, Zhejiang Province. Western Zhou Dynasty, Shangyu area of ​​the original porcelain production has become a certain scale, the product is divided into two types of green glaze and black glaze. To the spring and autumn battle