Photo taken on March 21, 2018 shows excavation at a ruin from the Eastern Zhou Dynasty (770-256 BC) in Zhangqiu district, Jinan city, East China's Shandong province. The discovery of human remains in the ruin shows people were still used as burial sacrifices in the Qi State of the Eastern Zhou Dynasty, according to Jinan's Institute of Archeology. [Photo/China News Service]