The combo photo shows the Palace Museum, also known as the Forbidden City, in Beijing, capital of China, on Dec. 17 to Dec. 22, 2016 (inside out). Beijing lifted a red alert for air pollution from Dec. 16 to Dec. 21. (Xinhua/Lyu Shuai)
The combo photo shows the Palace Museum, also known as the Forbidden City, in Beijing, capital of China, on Dec. 17 to Dec. 22, 2016 (inside out). Beijing lifted a red alert for air pollution from Dec. 16 to Dec. 21. (Xinhua/Lyu Shuai)