Siddun Site

　　　The Siddun Site is situated in Sanhuangmiao Village, Zhenglu Township, Wujin, approximately 15 kilometers from downtown Changzhou. The mound stands about 20 meters above the ground and has an oval shape. It was discovered in 1973. After investigation by the Changzhou Museum, it was identified as a late Neolithic cultural site. The site measures 100 meters from east to west and 80 meters from north to south, covering an area of about 800,000 to 900,000 square meters. In 1978 and 1979, the Nanjing Museum conducted two excavations at the site, unearthing over 100 artifacts, including 20 jade cong, 15 jade bi, and 25 stone adzes.

　　　　Based on the stratigraphic deposits and the excavation of two tombs, the Siddun Site is divided into two cultural layers: the lower layer belongs to the Songze culture, and the upper layer to the Liangzhu culture, dating back approximately 4,500 years. After 1990, newly discovered artifacts include finely engraved jade cong and jade bi, as well as an important necklace made up of dozens of beads, tubes, and conical pendants. It is now a provincial-level cultural heritage protection unit.