Wu Xiujie, a researcher at the Institute of Vertebrate Paleontology and Paleoanthropology of the Chinese Academy of Sciences, introduces the latest discoveries and studies concerning the Hualongdong ancient human site during the Hualongdong site academic conference in Dongzhi County of Chizhou City, east China's Anhui Province, Dec. 6, 2024. (Xinhua/Zhou Mu)