China was the first country in the world to cultivate silkworms and to develop silk weaving. More than 3,000 years ago, sericulture and silk weaving were already significantly developed. Silk fabric was a famous and unique product in ancient China. It was brought to many parts of the world through the Silk Road. The silk fabric unearthed from Qianshanyang sites of Zhejiang Province in 1958, dates back to 2700 B.C, the earliest known silk material. From the Xia Dynasty to the late Warring States period, more and more delicate fabrics with various rich patterns were made into colored silk.