Li Xiaolong (R), an expert on cultural relics preservation, colors a bronze ware with his colleague at the relics conservation center of the museum of Tianshui City, northwest China's Gansu Province, July 15, 2013. A total of six cultural relics preservation experts of the museum conduct the conservation work on relic items here. They use modern technology as well as traditional handicraft to repair and restore cultural relic fragments and damaged bronze wares. (Xinhua/Chen Bin)