Located in Songze Village five kilometers away from the city of Qingpu County, Songze Ancient Cuture Site is the oldest one in Shanghai with a long history of about five or six thousand years. The upper floor is tawny and the pottery pieces, porcelain wares, stone wares and bronzes unearthed are works of the late period of the Western Zhou Dynasty (c. 11th century—771 B.C.) and the Spring and Autumn Period (770-476 B.C.). The taupe middle floor is a public burial ground and there are two graves in which children were buried with middle-aged women (the way of the matriarchy). The lowest floor is dusty blue and there sees cellars and utensils as well as the grains that show the farmers of the district planted rice about 6,000 years ago.