In May, Jiangnan is shrouded in misty rain. In Sanhuangmiao Village, Zhenglu Town, Tianning District, Changzhou City, Jiangsu Province, the archaeological team of the Temple Pier Site of the Nanjing Museum is racing against the clock to explore the source of prehistoric civilization in the the Taihu Lake Lake area, sorting out cultural relics in the warehouse on rainy days, and digging on the pier body on sunny days. In recent years, a series of new achievements discovered by the archaeological team have provided a new perspective for discussing the development model of civilization in the lower reaches of the Yangtze River region. When it comes to Liangzhu culture, many people think of the Liangzhu Culture Site located in Yuhang District, Hangzhou. In the view of Lin Liugen, Deputy Director of the Museum of Art and Archaeology at Zhejiang University, Liangzhu Ancient City is a representative form of civilization in the lower reaches of the Yangtze River. The Sidun Site, located 200 kilometers away from Liangzhu, reveals that the Yangtze River Delta belongs to the same cultural circle. "At the Sidun site, we can also see that the Liangzhu culture evolved from the Songze culture, which highlights the process of civilization from quantitative to qualitative change." Lin Liugen introduced. The picture is an aerial view of the Sidun Site. The Sidun Site, dating back approximately 5500-4500 years, was originally an elliptical earthen mound that stood about 20 meters above the surface, measuring 100 meters in length from east to west and 80 meters in width from north to south. The temple pier body is precisely located at the center of the water system, with an approximate enclosed area of approximately 1.5 million square meters in the outer ring of the water system. With the support of the "Archaeological China" major project, since 2019, the Nanjing Museum has continued to carry out archaeological work on the Sidun Site and achieved important results. The Songze cultural relics of the Sidun Site are distributed in the north and east terraces of Dun, covering an area of approximately 15000 square meters. Tomb areas, drywall style buildings, water wells, and other relics have been discovered. The architectural relics found on the high earth platform of the tomb resemble large altars. Among them, there are a total of 40 tombs, and a large number of precious cultural relics such as pottery, jade, and stone have been unearthed. Six painted pottery pots were unearthed from the well, with the most exquisite being the woven pattern of a bird with a tail painted in red, yellow, and black. Several archaeologists have stated that the millennium long development process indicates that the civilization level of the ancient kingdom of Sidun has reached a very high level. The picture shows some newly unearthed cultural relics. At first, the Song Ze cultural tombs directly broke away from the burial of raw soil. During the Liangzhu Culture period, the ancestors began to fill the southern depression with mud and gradually pile it up, forming the bottom of the temple piers. They also dug foundation trenches and filled stones on the mud, forming nearly 80 meters of stone masonry relics. This type of stone masonry relic also exists at the bottom of piers and abutments such as Mojiao Mountain and Wugui Mountain at the Liangzhu Site in Hangzhou, and should be a blind ditch that facilitates drainage. "The stacking techniques of Sidun and Mojiao Mountain are basically the same, and the functions of Sidun and Mojiao Mountain are generally similar," said Yu Chenglong, associate researcher at the Nanjing Museum. Since the 1970s, excavation work has been carried out at the Sidun Site, which has undergone six archaeological excavations and is still constantly being updated. Jade bi and jade cong continue to be unearthed. Lin Liugen introduced that the functions of these jade artifacts are the same as those unearthed in the ancient city of Liangzhu. Jade bi is used to offer sacrifices to the heavens and jade cong is used to offer sacrifices to the earth, containing a common concept of ritual and the unity of heaven and man. Similar production and lifestyle have laid the material foundation for the civilization of the lower reaches of the Yangtze River. "More than 5000 years ago, the Yangtze River Delta region was in the same cultural circle." Yu Chenglong said that the Sidun site vividly reflects the formation and development of the complexity of prehistoric society in the the Taihu Lake Lake region, and finally moves towards an early country