It was a mysterious prehistoric man who created the prehistoric culture across the lake bridge. Chen Chun, one of the authors and a professor in the Department of Cultural Relics and Museums of Fudan University, described this group of ancestors as follows: this human moved to this land of fish and rice about 7,800 years ago, lived for less than 200 years, and then disappeared. Although they are about 1000 years earlier than the nearby Hemudu site, their pottery-making technology is far superior to the descendants of Hemudu. A canoe with oars has become one of the most important archaeological discoveries at the site of the bridge across the lake. 1990, this site buried in mud more than 2 meters underground was discovered, and the organic matter was surprisingly well preserved.