Photographers captured the startlingly different color palette of Beijing on sunny and smoggy days.
China's meteorological authority upgraded its air pollution alert from yellow to orange, the second most serious level, on Sunday evening, as smog worsened in many parts of the country.
Copyright © 2018 CGTN. Beijing ICP prepared NO.16065310-3
Copyright © 2018 CGTN. Beijing ICP prepared NO.16065310-3