Reporters take a group photo when visiting Tongwancheng city relics in Yulin, Shaanxi province, on Sept 26, 2016. Tongwancheng was the capital city of the Xiongnu (Hun) 1,600 years ago. The Xiongnu was a northern nomadic ethnic group that was influential in northern China for 10 centuries in ancient times. [Photo by Pang Xiaoqiao/chinadaily.com.cn]
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