Blue-and-white prunus Vase with a design of Xiao He chasing Han Xin under the moonlight.This porcelain vase is a very rare one in the world in that it has an image from a historical event. The skill in pre-forming, painting, glazing and firing of the prunus vase are all at the top level among ceramics from the late Yuan (1271-1368) to early Ming dynasties (1368-1644). It's now in collection of Nanjing Museum.[Photo/zhongguociwang.cn]