The inside of an unearthed coffin is pictured after archaeologists open it at Xilin Gol league museum in Xilinhot, north China’s Inner Mongolia Autonomous Region, March 8, 2014. A 1,500-year-old coffin, excavated from grassland of Xilin Gol league, was opened here on March 8. The well-preserved coffin could date back to Northern Wei Dynasty (386-534). The identity of the tomb’s owner is still unknown.[Photo by Zhang Ling/Xinhua]

Archaeologists measure unearthed articles at Xilin Gol league museum in Xilinhot, north China’s Inner Mongolia Autonomous Region, March 7, 2014. A 1,500-year-old coffin, excavated from grassland of Xilin Gol league, was opened here on March 8. The well-preserved coffin could date back to Northern Wei Dynasty (386-534). The identity of the tomb’s owner is still unknown. [Photo by Zhang Ling/Xinhua]

Archaeologists lift the cover of an unearthed coffin at Xilin Gol league museum in Xilinhot, north China’s Inner Mongolia Autonomous Region, March 8, 2014. A 1,500-year-old coffin, excavated from grassland of Xilin Gol league, was opened here on March 8. The well-preserved coffin could date back to Northern Wei Dynasty (386-534). The identity of the tomb’s owner is still unknown. [Photo by Zhang Ling/Xinhua]