
Aerial photo taken on April 17, 2017 shows the Qiaoling archaeological park in Pucheng County, northwest China's Shaanxi Province. Qiaoling Tomb is for Li Dan, Emperor Rui Zong of Tang Dynasty (618-907). (Xinhua/Tao Ming)

Aerial photo taken on April 17, 2017 shows the Qiaoling archaeological park in Pucheng County, northwest China's Shaanxi Province. Qiaoling Tomb is for Li Dan, Emperor Rui Zong of Tang Dynasty (618-907). (Xinhua/Tao Ming)