Photo taken on Dec, 14, 2007 shows archaeologists working at tombs found in Xingyang City, central China's Henan Province. China's central province Henan, an important location of the Shang and Zhou Dynasty in ancient China, has a lot of historical relics, which need to be unearthed, protected and relocated from the middle route of the south-to-north water diversion project started since 2003. (Xinhua/Zhu Xiang)