This photo taken on April 8, 2024 shows a staff member of Nanjing Museum arranging pottery pots unearthed at Sidun Site in Changzhou, east China's Jiangsu Province. (Xinhua/Li Bo)

An aerial drone photo taken in May 2023 shows a view of Sidun Site in Tianning District of Changzhou, east China's Jiangsu Province. (Xinhua)

A staff member of Nanjing Museum arranges relics at a work station of Sidun Site in Changzhou, east China's Jiangsu Province, April 8, 2024. (Xinhua/Li Bo)

An aerial drone photo taken in December 2022 shows a view of the Sidun Site in Tianning District of Changzhou, east China's Jiangsu Province.