40th anniv. of discovery of Pingliangtai ruins marked in C China

People visit the exhibition marking the 40th anniversary of the discovery of Pingliangtai ruins in Henan Museum in Zhengzhou, capital of central China's Henan Province, Nov. 18, 2017. About 450 relics found in the ruins are displayed at the exhibition. (Xinhua/Zhu Xiang)