Guests watch ancient Chinese artifacts returning to China during an ancient Chinese artifacts returning ceremony in Washington D.C., capital of the United States, March 11, 2011. From left to right are a photo of a Ming Dynasty stone frieze, a Northern Qi Dynasty limestone Buddha, a Qing Dynasty ceramic vase and a Song Dynasty Bodhisattva head. U.S. government officials on Friday returned to China over a dozen of invaluable ancient Chinese artifacts which were seized by law enforcement officers from illicit traffickers in 2010. [Xinhua]