Archeologists work at the excavation site of a Zheng State tomb in Xinzheng City, Central China's Henan Province, July 12, 2017. The excavation of the tomb, which dates back to the Spring and Autumn Period (770 B.C. - 476 B.C.), has already uncovered more than 20 chariots and a large amount of horse bones. One of the chariots was larger-sized and decorated with bronze parts. It is thought to have been used by senior officials. (Photo/VCG)
