Undated photo shows a fresco found in a tomb located in Yuejiazhai village on the southern outskirts of Xi'an, capital of northwest China's Shaanxi Province. The grave dating back to ancient China's Western Han Dynasty (206 B.C.-24) is 4.6 meters long and 2.08 meters wide, and the coffin chamber is 2.1 meters high. The discovery will provide valuable materials to study the artistic development of the Western Han Dynasty. (Xinhua photo)