A view of the excavation at a tomb of the Spring and Autumn Period in Shangxing Town, Liyang City, East China’s Jiangsu Province. . The tomb complex, a circular mound, has a diameter of about 40 meters and a height of four meters. Archaeologists have unearthed more than 100 artefacts from the site, including pottery jars and other vessels. The eggshells were found in the No. 11 tomb, along with other utensils. (Photo: China News Service/Shi Jun)