LIVE: 1,500-year-old Yungang Grottoes, stone-carving treasure on ancient Silk Road

LIVE: Exploring Yungang Grottoes, 1,500-year-old stone-carving treasure on the ancient Silk Road. The UNESCO World Heritage Site is seen as an excellent example of rock-cut architecture, representing the outstanding achievement of Buddhist cave art of ancient China. #XinhuaLive