Aerial view of Pingyao, UNESCO World Cultural Heritage site in China's Shanxi

Aerial photo taken on May 6, 2019 shows the scenery of city walls and moat in Pingyao, north China's Shanxi Province. Pingyao, a UNESCO World Cultural Heritage site in north China's Shanxi Province, is famous for its well-preserved ancient architecture including the city walls. (Xinhua/Zhan Yan)