The Guyuan Museum in northwestern China's Ningxia Hui autonomous region has recently displayed a special coffin from the Wei Dynasty (220-265).
The coffin, unearthed in 1981, is exquisitely painted with figures which showcase the integration of China's different ethnic groups.
The paintings on the coffin involve people's daily lives, widely known stories and outdoor activities such as hunting.
There are also pictures of important people, including the tomb owner, a lord, and images of his life before death.
People seen in the paintings wear clothing of different ethnic groups, such as the Han and Xianbei, one of the major nomadic groups in northern China from the Han Dynasty (206 BC-AD 24) to the Southern and Northern Dynasties (420-581).
