Photo taken on March 17, 2014 shows an archaeologist working at a tomb in Jiaozuo city, Central China's Henan province. Henan, an important location of the Shang and Zhou dynasties in ancient China, has a lot of historical relics. They need to be unearthed, protected and relocated from the middle route of the south-to-north water diversion project that started since 2003. [Photo/Xinhua]